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By Ann Oldenburg, USA TODAY

"Baby bumpppp. My little angel !" wrote Jenelle Evans (now going by Jenelle Rogers), star of MTV'sTeen Mom 2, as sheshared this photo of her brand-new baby bump with her Instagram followers this morning.

Evans, 21, is expecting a baby with her husband of one month, Courtland Rogers. She tweeted that she is "7 weeks" along.

"I missed a few birth control pills, and found out I was pregnant at a doctor's appointment," Jenelle tells MTV Act. "I was really surprised. This wasn't planned, but it happened, so we're taking it as we go. Courtland and I are happy and excited now."

"We know having a child can be difficult, but we're going to do our best," she added.

Evans rose to fame in MTV's 16 and Pregnant. In 2009, she gave birth to son Jace, with boyfriend Andrew Lewis. She went on to star in Teen Mom 2, which documented her new life with the baby. But she no longer has custody of him. A notorious partier, Jenelle has been arrested for breaking and entering, drug possession and assault. In May 2012, she showed off her new breast implants.

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