Anna Paquin's post-baby body is in better shape than her pre-baby body! In the July 14 episode of HBO's True Blood, the 30-year-old actress stripped down to lacy lingerie, showing off her defined abs, lean legs and toned arms. Paquin -- who welcomed fraternal twins Charlie and Poppy in September 2012 -- wasn't the only one showing some skin in the fifth episode of the vampire drama's sixth season. In addition to her character, Sookie Stackhouse, Ben Flynn/Macklyn Warlow (played by Rob Kazinsky) appeared shirtless in the scene.

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(Ryan Kwanten, who plays Sookie's brother, Jason Stackhouse, also filmed a graphic sex scene with actress Anna Camp's Sarah Newlin.)

Paquin and her husband, costar Stephen Moyer, "are both very active and love being outside," a source tells Us Weekly of the California-based couple. "They love to take walks and ride bikes to all of the local coffee shops and restaurants."

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Though True Blood's storylines get darker each episode, the mood is much lighter behind the scenes -- thanks in large part to the presence of Charlie and Poppy on set. "Anna and Stephen bring them everywhere," costar Alexander Skarsgard tells Us. "They're beautiful!"

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Paquin has yet to reveal the secret behind her post-baby body, but the Canadian-born, New Zealand-raised star has always been a healthy eater. "I don't want to be one of those actresses who says, 'I eat cheeseburgers all the time.' I don't!" she told Self in 2010. "I eat a lot of fruit and vegetables."

This article originally appeared on Usmagazine.com: Anna Paquin Shows Off Toned Post-Baby Body in Lingerie on True Blood