Katy Perry Goes Makeup-Free in New Movie — See More Celebs Without Makeup! (PHOTOS)

at 12:38 pm | By

Katy Perry is stripping down — in so many words — for her upcoming 3-D documentary Part of Me, in theaters this summer.

In a clip that aired last week on Ellen, fans were able to catch a glimpse of the Firework singer without any makeup on, as she prepared for a recent performance.

Remarkably, Katy, 27 — who has been glamming it up lately, at such recent events as the 2012 Billboard Music Awards — looked just as good dolled down as she does when she gets all dolled up on the red carpet. Whatever her secret is, we hope she’ll share it with us soon!

Also during the interview, Katy told Ellen about her decision to include the highs and lows of her personal life in the documentary (out July 15), including her recent divorce from Russell Brand.

“I think sometimes people think that we’re perfect, and we know we’re not perfect, at all,” she said. “I think it’s important [to] start breaking down the idea that, to achieve your dream, you always have to be perfect, or flawless or live in some kind of fantasy world.”

Of course, Katy isn’t the first celebrity to ditch the makeup for a more au natural look. Check out more celebs without makeup, including Bethenny Frankel and Demi Lovato, in our gallery now!