Anna Wintour wearing a Chanel Haute Couture dress from Spring/Summer 2019.

Lady Gaga in a gown by Brandon Maxwell and Tiffany jewelry.

One of Lady Gaga's four outfit changes on the red carpet.

Bee Shaffer in a tailored black suit by Alexander McQueen.

Serena Williams wore a custom fluorescent Versace gown and Nike x Off-White sneakers.

Billy Porter in a statement one piece and wings.

Co-chair Harry Styles wore a pleated Gucci top with high-waisted trousers and a single pearl earring also by the brand.

Laverne Cox wore a Christian Siriano gown on the red carpet.

Ashley Graham wore Dapper Dan custom Gucci blazer and tights and accessories along with a Stephen Webster ring.

Céline Dion arrived in an Oscar de la Renta piece that weighs over 22 pounds.

Sara Sampaio opted for a white gown by August Getty Atelier.

Karlie Kloss arrived wearing a custom minidress by Dapper Dan for Gucci.

Mindy Kaling wore David Webb Jewels and a gold dress.

Rachel Brosnahan arrived in a gown by Erdem.

Awkwafina arrived wearing a gold dress by Altuzarra.

Yara Shahidi wore a custom Prada ensemble and David Webb jewels.

Ava DuVernay chose a bright-green dress for the evening.

Florence Welch arrived in a custom Gucci cape and dress.

Tiffany Haddish opted for a sequined suit.

Paloma Elsesser wore a denim gown by Brock Collection.

Kris Jenner arrived wearing Tommy Hilfiger.

Saoirse Ronan wore a Gucci gown on the red carpet.

Mary-Kate and Ashley Olsen arrived in vintage Chanel.

Miley Cyrus arrived in Saint Laurent.

Rosie Huntington-Whiteley wore Oscar de la Renta.

Lucy Boynton chose a sequin-adorned gown with feather trim.

Carey Mulligan arrived in Prada.

Cole Sprouse and Lili Reinhart both wore Ferragamo.

Hailey Baldwin arrived in a custom gown by Alexander Wang.

Emily Blunt arrived on the pink carpet in Michael Kors.

Aurora James opted for a custom Brother Vellies ensemble.

Alexa Chung finished her look with a matching, embroidered hat.

Jared Leto wore a red gown.

Zoe Saldana arrived in a gown and shoes by Michael Kors.

Elle Fanning wore a Miu Miu top and pants.

Regina King opted for a glitzy gown.

Joan Smalls arrived in a black dress with cutouts.

Emma Roberts opted for a pink Giambatista Valli gown and Jimmy Choo sandals.

Zoë Kravitz arrived wearing Saint Laurent.

Bella Hadid arrived wearing a black gown by Moschino.

Gigi Hadid donned a Michael Kors look that she completed with Lorraine Schwartz jewelry.

Kim Kardashian wore a design by Mugler.

Lily Collins chose a Giambatista Valli gown, Cartier jewels, and Jimmy Choo clutch.

Kylie Jenner arrived wearing a purple strapless Atelier Versace gown.

Kendall Jenner arrived wearing a custom Versace gown.

Hailee Steinfeld wore Viktor & Rolf couture from the Spring/Summer 2019 runway and finished with Jimmy Choo shoes.

Solange wore a snakeskin bodysuit and matching boots by Ferragamo.

Cara Delevingne opted for a rainbow Dior Haute Couture look.

Kacey Musgraves wore Moschino and metallic Aldo pumps.

Ciara went for an all-green look.

Jennifer Lopez arrived in a custom Versace gown and matching cap with Harry Winston jewels.

Julianne Moore opted for a shimmering Valentino gown.

Ezra Miller chose a custom Burberry suit and Tiffany & Co. jewels.

Lily-Rose Depp arrived on the pink carpet wearing Chanel.

Emma Stone arrived in a jumpsuit by Louis Vuitton.

Cardi B arrived in a gown by Thom Browne.

Lupita Nyong'o arrived in a custom Atelier Versace gown and heels and Bulgari jewels.

Nicki Minaj wore a Prabal Gurung gown and Brother Vellies sandals.

Zendaya opted for a blue gown that lit up on the pink carpet.

Kerry Washington wore Tory Burch.

Katie Holmes arrived on the red carpet wearing Zac Posen.

Kate Moss chose a sequined number and carried a Jimmy Choo clutch.

Tessa Thompson chose a pink and black look.

Lizo wore a look by Marc Jacobs.

Gemma Chan arrived wearing a dress by Tom Ford.

Priyanka Chopra arrived in a Dior Haute Couture gown and Chopard jewels.

Joe Jonas and Sophie Turner wore Louis Vuitton on the pink carpet.

Gisele Bündchen wore a Dior Haute Couture gown.

Janelle Monáe wore a look by Christian Siriano.

Lena Waithe and Kerby Jean Raymond coordinated in Pyer Moss suits on the red carpet and accented their looks with David Yurman jewlery.

Gal Gadot arrived in Givenchy.

Dakota Johnson wore Gucci.

Emily Ratajkowski wore a Dundas gown and Jimmy Choo shoes.

The actor wore Coach.

Campbell arrived wearing a gown by Valentino and Bulgari jewels.

The singer stepped onto the carpet in a custom Carolina Herrera gown and Tiffany & Co. jewels.

Shayk wore a blue velvet Burberry gown with coordinated gloves, along with a Burberry clutch and sandals.

The Goop founder arrived in a couture look by Chloé.

The model wore a pink Ralph Lauren gown.