Katy Perry keeps it cool in a fitted Tommy Hilfiger dress – bold blue, body-fit! (Photo: Splash News)

Anne Hathaway was embodying the 60s with a bouffant hairstyle. The actress beamed in a strapless and structured Marc Jacobs taffeta mini. (Photo: Fame Pictures)

Elizabeth Hurley looked flawless in a strapless blush pink chiffon and tulle couture Elie Saab gown. Hurley has a way with pinks and style!
(Photo: Fame Pictures)

Cindy Crawford, alongside Donatella Versace, sizzled in a plunging and fitted electric blue Versace number that featured a thigh-high slit. Crawford proves that at 43 her supermodel figure is still fit and in fashion!
(Photo: Reuters/Lucas Jackson/Landov)

Victoria Beckham in a Marc Jacobs designed polka-dot single shoulder mini dress with
a train stood confidently in sky-high pedestal ankle wrap pumps. The only
fashion tragedy, Leighton Meester wore almost identical Louis Vuitton shoes! At this Gala, that
is a serious faux Posh!
(Photo: Reuters/Lucas Jackson/Landov)

Kate Moss in a single shoulder Marc Jacobs asymmetrical mini dress
with matching platform heels was fashionably regal. On the arm of the designer himself, Moss completed the head-to-toe fashion forward look with a Stephen Jones metallic turban. (Photo: Wire Image)

With a bundle of joy on the way, Heidi Klum glowed in a bundle of layered and tiered organza fabric designed by Gilles Mendel.
Strapless and Sexy, Klum put her model feet forward and looked beautiful -
but, it’s Heidi Klum, she couldn’t look anything but!
(Photo: Getty Images)

Jessica Biel stepped out in Christian Louboutin’s looking radiant in a red
boned-bodiced Atelier Versace Spring 2009 gown complete with ruffled train. Boyfriend Timberlake, a co-host of the night’s festivities, looked dapper in a creation from his William Rast line.
(Photo: Getty Images)

Gisele Bundchen went super short in a sequined blue Versace
mini and peep-toe booties to match. With a fitted bodice and flapper
inspired hem, the leggy model was superbly styled! (Photo: Getty Images)

Tyra Banks in a metallic black strapless fishtail Badgley Mischka Couture
gown accessorized with the designer’s jet chandelier earrings, glass stone
cuff, and couture shoes. With a pose like that, no wonder she hosts
America’s Next Top Model. (Photo: Getty Images)

Almost a flashback to her wild youth, Madonna turned out in an
outrageous ensemble complete with thigh high stripper boots and the world’s
largest scrunchie. It’s Louis Vuitton, so that works for the “Material
Girl,” but not for the rest of us.
(Photo: Getty Images)

Style wise, if she were a puff pastry, she would be overly sweet and almost
sour. Leighton Meester stepped out in what was definitely a Louis Vuitton costume, complete with bedazzled paisley leggings to match. Xoxo, gossip girl? Not this time! (Photo: Getty Images)

Designer Stella McCartney in a lacy pant singlet showed off her glam gals
and design muses. Kate Hudson glistened in a gold keyhole halter
gown with exposed back, Liv Tyler was blissful in a blue plunging number,
and Kate Bosworth was an A-list fashion plate in a body hugging lace gown.
The Stella McCartney fan club is open to all A-list actresses, sign up now!
(Photo: Getty Images)

Mary-Kate, never one to opt for simple, wore a fantastically full vintage
Christian Lacroix frock. All bells and whistles included, the pleated chiffon bodice, with metallic lace and silver embroidered bustier definitely gives this twin starlet stand-alone style! (Photo: Wire Image)

Rihanna wore the pants (with a tailored tux jacket) and a bow tie too! The singer stepped out in an edgy Dolce & Gabbana creation. (Photo: Wire Image)