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Jennifer Lawrence may have fallen on her way to accept her Oscar for Best Actress, but she was the belle of the ball at Sunday's Academy Awards — especially AFTER the ceremony.

J-Law, 22, looked every inch the Hollywood ingenue in the pale pink strapless Dior Haute Couture gown she wore to the awards event. But it wasn't until she changed into a slinky silver Calvin Klein gown for the Vanity Fair Oscars after-party that she really showed off her famously hot bod.

SODAHEAD SLIDESHOW: See the sexiest actresses at the Oscars.

Overall, the tone of the evening was more chaste and covered-up than usual, but best supporting actress winner Anne Hathaway is getting a lot of attention for neglecting to choose the right brassiere for her big night. Ditto for Charlize Theron, who rocked a low-cut white Dior gown, and Naomi Watts, whose Armani Prive dress had a bit of a "uniboob" look to it.

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Other actresses proved that more is more. From Jennifer Lawrence to Jennifer Aniston, let us know: Who was the sexiest actress at the Oscars?