Lea Michele has no problem donning her birthday suit.

The former "Glee" star stopped by "Ellen" and explained why she went completely nude for her September cover of Women's Health UK.

"I just turned 30, so I figured, 'Why not?'" she told Ellen Degeneres. "I feel in pretty good shape, and it's very interesting, though, just walking around naked, going, 'I'm ready!'"

This wasn't the first time the actress showed her naked body in front of an audience -- she did "some nudity stuff" for her role in "Spring Awakening."

"I mean, I definitely am comfortable," she added. "I was on Broadway for a while and I had to do some nudity stuff for 'Spring Awakening,' so I'm pretty comfortable being naked."