Jennifer Lawrence goes from prom queen to bombshell: Sexiest actress at the Oscars?

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?