Britney Spears says being pregnant is not something that is as fun as celebrities make it out to be. Spears, as most mothers will tell you, says being pregnant is hard work.

Even though expectant mom Britney Spears poses nude on the cover of August’s Harper’s Bazaar, she tells the magazine that, when pregnant, “you don’t feel the most beautiful all the time.”

Spears, 24, is already mom to son Sean Preston, 10 months, and is expecting her second child with husband Kevin Federline in October. In an excerpt obtained by USA Today, she admits to Bazaar that, while pregnancy is “empowering,” she felt unprepared and “paranoid” the first time.

But with “this one, I was like, I’ve just got to wing it,” she continues. “It was weird for me at first because of who I am. Wherever you go, they expect you to look a certain way. I’m not supposed to be this big huge pregnant superstar.”

After child no. 2 is born, Spears is looking forward to getting back in shape and back to work. “After this baby,” she says, “I’m going to get really intense with it.”

Photos from Britney’s pregnant nude Bazaar cover.