Scarlett Johansson may not have taken home an award, but she was a winner in Williams' eyes with her strapless Oscar de la Renta gown. The silver piece was custom-made and accentuated Johansson's features with draped corset and long train.
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"Harriet" actress Cynthia Erivo was a dream in her ivory Atelier Versace ball gown. The dress was a work of art, complete with a bustier and operatic ball skirt. The singer and actress topped off the elaborate look with diamonds on every finger.
Also bringing out the bling, Janelle Monáe made her grand entrance in an embellished Ralph Lauren Collection creation. The hooded gown was covered in nearly 170,000 Swarovski crystals and took 600 hours to make.
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Sandra Oh went all-out with her dramatic Elie Saab gown. The "Killing Eve" actress walked the Oscars red carpet in the extravagant number, which featured tulle floral buds on the shoulders and hemline, a bow-tied waist and sparkles all around.
Brad Pitt may have been awarded an Oscar for his role in "Once Upon a Time in Hollywood," but Williams just couldn't resist the actor for his classic elegant red carpet style. The star wore a simple black Brioni tux with velvet jacket, bow tie and Fred Leighton jewels.
RELATED: Oscars 2020 red carpet fashion
Scarlett Johansson arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Charlize Theron attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Adam Driver, left, and Joanne Tucker arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Quentin Tarantino arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
US actor Tom Hanks and wife Rita Wilson arrive for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
HOLLYWOOD, CALIFORNIA - FEBRUARY 09: Leonardo DiCaprio attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Gal Gadot attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Camila Morrone attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
HOLLYWOOD, CALIFORNIA - FEBRUARY 09: Kristen Wiig attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Brad Pitt attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Timothee Chalamet attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Brie Larson attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Margot Robbie attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California. (Photo by Steve Granitz/WireImage)none
Renee Zellweger attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Cynthia Erivo arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Mahershala Ali and Amatus Sami-Karim attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Lucy Boynton and Rami Malek attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Patricia Taylor and Keanu Reeves attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Rooney Mara attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Natalie Portman attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Kathy Bates arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Joaquin Phoenix attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Florence Pugh arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Saoirse Ronan attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
US actors Robert De Niro (L) and Al Pacino arrive for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
Salma Hayek arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Penelope Cruz attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Molly Sims attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Geena Davis attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Writer-directors Noah Baumbach and Greta Gerwig attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Musician Alison Balsom and filmmaker Sam Mendes attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Margaret Qualley attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Producer Carthew Neal and filmmaker Taika Waititi attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Maya Rudolph attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Ida Darvish, left, and Josh Gad arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Rebel Wilson attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Sandra Oh attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Noah Baumbach and Greta Gerwig attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Elvira Lind, left, and Oscar Issac arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Sibley Scoles arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Todd Phillips and Alexandra Kravetz attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Musician Finneas O'Connell (R) and Claudia Suleweski attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
James Corden and Julia Carey 1attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Kelly Marie Tran attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Olivia Colman attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Costume designer Sandy Powell and Christopher Peterson attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
US actress Laura Dern greets US actor Billy Porter as she arrives for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
Matthew A. CherryDeandre Arnold, his mother Sandy Arnold, second right, and the cast and the crew of "Hair Love" arrive at the Oscars on Sunday, Feb. 9, 2020.none
Nicole Kimpel (L), Spaniard actor Antonio Banderas (C) daughter Stella Banderas (R) arrivea for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
US actor Anthony Ramos arrives for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
HOLLYWOOD, CALIFORNIA - FEBRUARY 09: Janelle Monâ°e attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
HOLLYWOOD, CALIFORNIA - FEBRUARY 09: Julia Louis-Dreyfus attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Beanie Feldstein arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Kaitlyn Dever arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Billie Eilish attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Roman Griffin Davis and Archie Yates attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Caitriona Balfe arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Kaitlyn Dever arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Laura Dern arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Vanessa Nadal and Lin-Manuel Miranda attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California. (none
Krysty Wilson-Cairns arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Siqi Song arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
US actress Laura Dern and mom actress Diane Ladd arrive for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
Mindy Kaling attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Tonya Lewis Lee and filmmaker Spike Lee attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Chrissy Metz attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Sigourney Weaver arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Harvey Keitel, left, and Daphna Kastner arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
PwC representatives attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Kate Fahy and Jonathan Pryce attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
America Ferrera attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Questlove arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Idina Menzel attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Actresses who voice the character of Elsa in Disney's Frozen movies arrive for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
Utkarsh Ambudkar, left, and Naomi Campbell arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Regina King arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Julia Butters attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Aurora arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Tony Hale arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Kelly Ripa, left, and Mark Consuelos arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Director Bong Joon-ho (C) with cast and crew of "Parasite" attend the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Kelly Rippa attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Bong Joon-ho arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Sebastian Maniscalco arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Roger Deakins, left, and Isabella James Purefoy Ellis arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
US director Matthew A. Cherry, US producer Karen Rupert Toliver and Deandre Arnold the teen who was told his dreadlocks violated school dress code, arrive for the Oscars.none
Diane Warren arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Kerri Higuchi, left, and John Cho arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
George MacKay, left, and Dean-Charles Chapman arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Robin Roberts and Michael Strahen arrive for the 92nd annual Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
Fatma Al Remaihi arrives for the 92nd Oscars at the Dolby Theatre in Hollywood, California on February 9, 2020.none
Kristen Anderson-Lopez, left, and Robert Lopez arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Billy Porter attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Mario Lopez arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Zazie Beetz, left, and David Rysdahl arrive at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
George MacKay arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Blac Chyna arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Lilly Singh arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Tamron Hall attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Brad Goreski arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Kit Hoover arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Lily Aldridge arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Kristin Cavallari arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Ryan Michelle Bathe arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
Erin Lim attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Lilliana Vazquez attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Carissa Culiner attends the 92nd Annual Academy Awards at Hollywood and Highland on February 09, 2020 in Hollywood, California.none
Giuliana Rancic arrives at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles.none
At the annual Vanity Fair Oscar party, Chrissy Teigen stunned in a sea foam green gown. The sexy number had a low neckline and dangerously high slit, but was paired with a matching cape that had intricate braid details.
Vanessa Hudgens also turned heads at the after-party, wearing a regal purple Vera Wang halter gown. The silk number had long, billowing attachments over the actress' shoulders, which she had an incredible time playing with as she walked the red carpet.