Zoe Saldana poses in a naked modified plank for Women's Health UK's September issue. Credit: John Wright/Courtesy of Women's Health

Uninhibited workout? Zoe Saldana may keep her personal life relatively private, but she had no problem showing off her body in the cover shoot for Women's Health UK's September issue. 

The now-pregnant Guardians of the Galaxy actress flaunted her stunning pre-baby bump physique on the magazine's cover and inside spread, going completely naked for the sexy shoot. 

In one image, the action star looked fit while doing a modified plank, resting on her forearms and thighs with her black hair down and wavy.

"My body is less toned," she told the mag (via the Huffington Post). "I do look in the mirror and see things I don’t want. My first reaction is I breathe and I think, 'I’m a woman, I’m 36, my body is changing.'"

The trim mommy-to-be has embraced her body throughout its many changes. 

"I’m exactly where I want to be," she said in her pre-pregnancy interview. "I do feel beautiful in a way that even when I was working out a whole lot, I sometimes didn’t. Because there have been times that I was really slender and I didn’t like that I sometimes looked a little too muscular and flat-chested –- you’ll never be completely happy, so at the end of the day it’s like, f--k it. Just be happy, regardless."

Earlier this month, Us Weekly exclusively broke the news that Saldana is three months pregnant with her first child. She has been married to Italian artist Marco Perego since September 2013.

The Zoe Saldana interview launches the Women’s Health Body For Life campaign in the September Naked issue — on sale Wednesday, July 30. Also available as a digital edition.