Lena Dunham Poses Topless With Her Dog for National Mutt Day

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The 'Girls' star covered up with her adorable pup Lamby.

Lena Dunham's no stranger to going topless, whether it’s for her HBO hit Girls or just for fun, but on Friday, she stripped down for a cause.

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The actress posed for an Instagram pic with her adorable dog, Lamby, covering up everyting but the tattoo below her right arm.

"We heard a rumor it's #NationalMuttDay ❤️" Dunham captioned the pic.

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It’s been an eye-opening week on Instagram for Dunham. On Monday, she posted a paparazzi photo of herself jogging and opened up about changing her attitude about the exercise.

"@jennikonner is directing the season finale of Girls and decided that as Hannah evolved so would her run, so she got me a training session with Matt Wilpers from Mile High Run Club," Dunham explained. "Within an hour I had a different relationship to this formerly torturous activity. I felt strong, swift and proud."

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