1 of 21
The singer showed off her buff arms in a strappy Dolce amp Gabbana satin gown with a reported $10 million in diamonds from Neil Lane at the Vanity Fair party.
2 of 21
The Spider-Man 3 star sparkles in this beaded Chanel Couture gown featuring a feathered hem.
3 of 21
Fresh off a beach vacation, the presenter glows in an off-the-shoulder white satin Valentino gown and a whopping $2.9 million of Cartier jewelry.
4 of 21
The media mogul hits Vanity Fair's Oscar bash in a bold bohemian-inspired Gucci dress.
5 of 21
The Devil Wears Prada star opts for another Italian designer, Valentino, in a lacy white gown festooned with a black bow.
6 of 21
The 14-time Oscar nominee dresses up her black Prada coat and duchesse satin skirt and with an emerald-green belt and gigantic necklace.
7 of 21
The Memoirs of a Geisha star dons a butter-yellow tiered Valentino Couture gown at the Vanity Fair bash.
8 of 21
John Travolta's leading lady goes wild on the Oscars red carpet in this leopard-print Dolce amp Gabbana column dress.
9 of 21
The Grey's Anatomy actress gets on the tier train with a ruffled floral-print Alexander McQueen frock at the Vanity Fair party.
10 of 21
The actress bloomed at the Vanity Fair party in an Armani Privé deep blush and nude toned strapless silk organza gown and beaded hairpieces in her updo.
11 of 21
Did she change to match her new Oscar? The Best Supporting Actress winner was a golden girl in a beaded Roberto Cavalli dress at the Vanity Fair party.
12 of 21
Changing out of her red carpet Armani Privé gown, the performer floats in to the Vanity Fair party in an ice blue Elie Saab Couture gown.
13 of 21
Was the train too much to dance in? The Best Actress nominee arrives at the Vanity Fair blowout in a champagne embroidered pearl Chanel Couture gown.
14 of 21
The petite actress goes for a flirty frock, wearing a Lanvin taffeta cocktail dress and strappy heels to the Vanity Fair bash.
15 of 21
She's entering L.A. social life with a bang – the new Angeleno is minimal in a clinging white Azzedine Alaia gown and oversized emeralds at the Elton John AIDS Foundation viewing party.
16 of 21
The actress showed off her curves in a nude Michael Kors ruched corset gown and Van Cleef amp Arpels jewels at the Vanity Fair party.
17 of 21
The talk-show host sizzles in a plunging crimson Marc Bouwer gown at the Vanity Fair bash.
18 of 21
Eschewing a gown, the actress goes for a spangled Matthew Williamson minidress and silver platform heels – perfect for partying at the Vanity Fair event.
19 of 21
Leaving behind her red carpet and performance gowns, the singer goes short in a beige satin cocktail dress from Lanvin's spring collection for the Vanity Fair shindig
20 of 21
The singer makes a graphic entrance to the Vanity Fair party in a black and white embroidered Chanel Couture dress along with the ultimate accessory – rock star husband Gavin Rossdale.
21 of 21
The supermodel looks ready to shake and shimmy in her gold beaded Azzedine Alaia minidress and mega-necklace at the Vanity Fair party.
SEE PHOTOS FROM THE RED CARPET
Best Dressed at the Oscars
Leonardo DiCaprio Speaks Out on Gilbert Grape Star Darlene Cates' Death: She 'Was the Best Acting Mom I Ever Had'
Johnny Depp Hits Back over Claims He Squandered His Money, Alleges 'Smear' Campaign
12 Stars Over 50 Who Are Defying the Laws of Aging
It's Been Almost a Year! Inside Leonardo DiCaprio and Nina Agdal's Sweet, Globe-Trotting Romance — from Ibiza to St. Bart's