Since her highly-sexual hit album "Stripped" which featured songs like "Dirty," Aguilera has been known for showing skin, so it's no surprise that as her belly bump grows, she remains eager to take her clothes off.
She's just as eager to be a mom, even though her pregnancy came as a surprise.
"We were planning on starting to try after the tour. And so, I had gone off the pill to prepare my body, because I didn't know how much time it would take," she told the magazine, which hits stands on Dec. 11. "You've heard it takes some time - except with Power Egg and Super Sperm here … I'm like, Oh, my God, can you believe it just happened?"
By her estimation, the "Candyman" singer became pregnant while her husband, Jordan Bratman, was visiting her in Georgetown on the U.S. leg of her tour. She still had a month of performing left and her shows were extremely physically demanding. She changed costumes 10 times, hung from a pinwheel - all in high heels.
She wore a well-concealed heart monitor, but didn't want to announce while she was still on the "Back to Basics" tour.
"I didn't want to make the audience uncomfortable, like, 'Pregnant lady onstage! Is she going to be OK?'" she said. "But I had to announce it to my band and my dancers, because I wanted to make sure they had my back."
As her baby bump grew, the public and the media continued to speculate about her pregnancy. It was finally confirmed when Paris Hilton announced that Aguilera was with child at a party for the VMAs. But Aguilera said she wasn't angry with Hilton.
"Because I hadn't said anything, people thought I was trying to keep it this big, bad secret, and that's not the case at all," she said. "I just wasn't commenting. I'm not being like, 'Hey, everybody, I'm pregnant!' I'm not that girl."
"If you're too sexual, you're slutty," she told Marie Claire. "If you're not sexual enough, you're a prude. I like to put it out there as a topic of conversation. Why does it bother you? What's your problem with it? Am I really hurting you? Let's get to the root of it. I have more than one side of me that likes to get out on a stage and sing. Sometimes I want to be aggressive, sometimes I want to feel empowered in my sexuality and my vulnerability. I want to put all that out there."