Onetime Oscar winner Reese Witherspoon just gave birth to her third child a few months ago, but her body is back in fighting shape. She showed it off on the red carpet of the 2013 Oscars, wearing a slim, strapless black and cobalt blue column gown by Louis Vuitton, which was accented by a train.

It wasn't our favorite dress of the night, but it most definitely spotlighted Witherspoon's to-die-for shape.

Witherspoon revealed that her daughter Ava, 13, helped her to pick out this dress. Clearly, the teen has good taste.

Witherspoon wore her blonde locks in thick, beautiful waves. She told the E! red carpet hosts that she owes all that hair to being recently pregnant -- she had her son Tennessee back in September, and clearly she still has the glow.

Reese Witherspoon Oscars 2013 Louis Vuitton
Jason Merritt, Getty Images
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