After the Oscars, It's the Afterparty: See What Every Star Wore

The actress mixed things up at the Vanity Fair Oscars party with a Donna Karan Atelier dress worn over pants, an Anya Hindmarch clutch, Jimmy Choo heels, and H.Stern jewels.

The newly engaged Maggie Grace was all smiles at Elton John's party, and we don't blame her . . . her champagne gown, flower crown, and shiny new diamond make us happy, too!

Jennifer Aniston didn't switch out of her Versace gown at the Vanity Fair bash.

The singer swapped out her yellow red carpet gown for a more dramatic black dress at the Vanity Fair Oscars party.

Amy Adams donned a flattering shade of periwinkle at the Vanity Fair Oscars party this year.

The model and actress kept things simple at the Vanity Fair Oscars party in a silver satin Katie Ermilio gown, which she paired with Stuart Weitzman shoes, an Anya Hindmarch clutch, and Monique Pean and Anita Ko jewels.

The printed trousers, a bright clutch, and dramatic black blouse that Miley wore to Elton John's Oscars party fit her personality perfectly.

Though she doesn't typically show her face, Sia stepped out at the Elton John Oscars party without her usual wig and showed off a printed set.

The rapper certainly got people talking about her blush pink dress and long fishtail braid at Elton John's party.

Nina Dobrev steamed up the Elton John Oscars party red carpet with a crimson cutout Reem Acra gown and metallic-accented heels.

Ever the stunner, Gigi Hadid showed some leg in a slit navy gown at the Elton John Oscars party.

A romantic, floral Naeem Khan gown was Julianne Hough's pick for the annual Elton John bash.

Being extremely pregnant didn't stop Isla Fisher from rocking a tight floral number to the Vanity Fair Oscars party.

Dita Von Teese brought her usual vintage elegance to Elton John's annual Oscars bash in a black Zuhair Murad gown and emerald jewels.

The actress dropped jaws at the Vanity Fair Oscars party with her beaded Zuhair Murad gown.

Rashida Jones donned a flowy, floral Andrew Gn gown at the Vanity Fair Oscars party.

Heidi Klum wasn't afraid to show some skin at Elton John's annual Oscars party with a silver sequined cutout gown.

The supermodel accentuated her curves in an angular black gown on the Vanity Fair Oscars party red carpet.

The Oscar-winning actress celebrated in white Dior at the Vanity Fair Oscars party.

Sarah Hyland was a black-and-white vision on the purple carpet at Elton John's Oscars party.

Leslie Mann stunned in a cream pantsuit and gold Neil Lane jewelry at the Vanity Fair Oscars party.

The supermodel stunned in body-hugging Alexandre Vauthier gown with liquid shine.

Dree got swept away with her Chloe dress at the VF arrivals.

The actress took the sophisticated route in a Rachel Roy lace sheath and Sophia Webster.

The supermodel slipped into a sheer black Balmain number for the festivities.

The actress showed off a plunging neckline and megawatt Neil Lane earrings at the party.

Zoe traded her blush-toned Oscars gown for this black and white Prabal Gurung look.

The singer made a sleek arrival in a black, one-shouldered gown.

The Oscar nominee ditched her glittering Elie Saab gown for this Altuzarra look straight off the Fall '15 runway.

The model got supersexy in this cutout Versace gown and Zuhair Murad heels.

The actress smoldered in a dark gown with floral accents.

The Oscar nominee traded her princess-worthy confection for a sleek black gown.

The mom-to-be showed off her bump in a shimmering bright blue gown.

The actress made a statement in a one-shouldered and jewel-adorned black sheath.

Solange caught our attention in a white Naeem Khan gown, which she finished with a Vince Camuto clutch.

The tennis star didn't hold back in a supersexy custom red Ines Di Santo creation.

Lupita's outfit change postceremony made our jaws drop. The actress was a vision in this Calvin Klein Collection dress, Nicholas Kirkwood shoes, and jewelry by Chopard.

It appears Rose couldn't quite make up her mind between a gown and a suit — so she went with a hybrid at Elton John's Oscars viewing party.

Selita showed off her stems in this sweet pink mini.

Mindy was a knockout in a custom Salvador Perez gown and Neil Lane jewels.

Ashley worked a thigh-high slit and some gold hardware at the Elton John party.

The actress went for the drama in a Rubin Singer creation and Tacori jewels.

Keira took the plunge in this black Valentino gown.

The actress was on trend in a jumpsuit.

Naomi celebrated the Birdman win in a sleek white Armani suit.

Regina was in no danger of looking boring in this multicolored confection.

Queen Latifah was red hot in a one-shouldered gown.

The model worked a suit the ultrasexy way.

The actress was a vision in a blue strapless gown.

The actress had a boho moment in this off-the-shoulder look.

Beyoncé was ultraelegant in a white Stella McCartney gown and a glittering Lorraine Schwartz necklace.

The actress showed off her stems in this sheer Zuhair Murad gown.

The actress pushed the fashion envelope in this ruffled and glittering confection.

The mom-to-be was barely showing in this gilded, plunging gown.

Michelle's Monique Lhuillier Fall '15 gown featured subtly sexy cutouts. She topped it all off with Norman Silverman Diamonds, as well as a bracelet and a ring by Dana Rebecca Designs.

Kelly showed off a sleek strapless column gown.

Karlie's moody black gown featured a sexy sheer hemline.

Miranda channeled Hollywood glamour in this plunging and cutout white gown.

For the afterparty, Lady Gaga opted for a sexy sheer black gown with a major train.

Katie turned heads in a fiery Zuhair Murad gown.

Paula had all eyes on her in this dramatic George Hobeika gown.

The actress looked sweet in a floral-embroidered Dolce & Gabbana dress.

The singer hit the party circuit in a cape and pant set.

Zoe revealed more than a hint of skin through her sheer, beige dress.

The singer got sexy in a slit, periwinkle-hued gown.

The actress kept it sleek and understated in white.

Jamie traded her Oscars ballgown for a sleek, embellished number.

Malin was another actress who showed off her stems via a sheer hemline.

The actress made a jaw-dropping arrival in an ombré gown.

The model put her underthings on display in this beige-hued sheer gown.

The supermodel sparkled in this sequined sheath.

Behati went the minimalist route in a halter-neck Calvin Klein Collection gown.

Jessica showed a little leg in an understated dress with an asymmetrical hem.

The actress turned heads in a sheer gown with allover floral appliqué.

Petra's liquid metallic Marchesa gown was like a second skin.

The style star stunned in this bohemian gown, which she finished with earrings from Graziela Gems.

The singer made an appearance in a moody black gown with lace detailing.

The actress's lacy number was like bright sunshine on the afterparty red carpet.

The singer showed off a seriously sexy Zuhair Murad gown on her way into the party.

Hailee was a standout in Andrew Gn's ikat embroidered and brocade gown.

The model walked the red carpet in a glamorous ball gown and Jacob & Co. diamonds.

The supermodel stunned in a bold-hued cutout gown with Oscar-winning hubby John Legend at her side.

The singer was white hot in a curve-conscious gown.

The actress was the picture of sophistication in a gown from Zac Posen's Fall 2015 lineup.