Christina Aguilera poses for Marie Claire

NEW YORK - Christina Aguilera flaunts her pregnancy in an upcoming issue of Marie Claire magazine. The 26-year-old singer is shown wearing a cropped jacket, hoop earrings and a ring on the cover of the January issue, on newsstands Dec. 11. Excerpts from the story were released Wednesday.

Aguilera and her husband, Jordan Bratman, were married in 2005.

The singer says she learned she was pregnant while on her recent "Back to Basics" tour.

"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. You've heard it takes some time — except with Power Egg and Super Sperm here," she says. "... I'm like, `Oh my god, can you believe it just happened?'"

Aguilera says she became "paranoid" during the tour.