Oscars: 20 After-Party Dresses

So there was a fashion diva under all that bubble wrap: For the after-parties, J.Lo shed her awkwardly sculpted Armani Privé for a far sleeker Gucci gown.

This two-time Oscar winner left nothing to the imagination in this Armani Privé gown that put the ''little'' in little black dress.

Adams glowed — and not just because of her pregnancy — in this regal blue gown.

The singer took the idea of a party animal perhaps a bit too literally in this garish zebra-print number.

The Glee star may not have crossed over to movies yet, but she has all the style of a silver-screen siren, as she proved in this high-drama Oscar de la Renta.

These hips do lie. Hayek's Ed Hardy-patterned bubble dress added imaginary girth to the actress' lower half.

Her gloriously constructed red cocktail dress almost made up for the chaos that was the Inglorious Basterds star's ceremony gown.

With its corseted bodice and flounce hem, the Mad Men star's basic black dress was anything but boring.

Diaz kept things sparkling, but turned down the volume — on her hair and her dress — to welcome effect in this Victoria Beckham design.

Like many of the night's looks, we could meet it halfway: Portman's delicately wrapped charcoal bodice was winning us over... until we saw the ice skater skirt and bridesmaid peep toes.

We barely recognized Beckinsale without her usual tulle and trumpet gown-style, but we have to say, we're liking the more casual vibe of this slinky column.

Much like the blush Elie Saab dress she wore to the ceremony, Kendrick kept it girly with this short number.

If there was any lingering doubt about her design chops, Beckham put them to rest when she showed off this stunner from her own collection.

While we liked the cherry red of Bosworth's gown, we could've done with less of it in the dress' overly fussy top-half.

After a successful turn in a ruffled Atelier Versace gown, Banks scored another hit post-show — though this Versace was more racy than romantic.

Tomei's sequined gown could've been a successful nod to the '80s, but with the awkward obi belt, she looked more like a glittery geisha.

Seyfried swapped gowns for gams at the after party, but a slightly richer hue might've helped keep her from looking so washed out.

Despite her movie's Best Picture loss, the Avatar star glowed on the carpet in an ultra-glam red number.

The Project Runway host kept it very very brief in an ultra-mini.

Osbourne topped her elegant flapper-style dress with a questionable Dame Edna-inspired 'do.