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What a fox! Megan Fox debuted her post-baby body on March 21 just five weeks after giving birth to son Bodhi Ransom.

PHOTOS: Megan's body through the years

The "This Is 40" actress, 27, showed off her svelte figure as she was photographed in L.A. with her son Noah, 18 months. Fox wore tight-fitting skinny jeans, a grey T-shirt, and a black tank top underneath.

PHOTOS: Megan and Brian's happy marriage

Us Weekly confirmed last month that Fox and husband Brian Austin Green, 40, welcomed their second baby boy on Feb. 12. During her pregnancy, the gorgeous brunette was hard at work filming the upcoming "Teenage Mutant Ninja Turtles" film in New York City. (Green is also dad to son Kassius, 11, with ex-girlfriend Vanessa Marcil.)

PHOTOS: Megan's pregnancy style

In a Facebook post on February 18, Fox shared a picture of a woman sitting underneath what appears to be a Bodhi tree. The star has otherwise kept mum about her baby boy's arrival.

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