Britney Spears Poses Partially Nude

The star, 23, will be shown topless in the magazine, wearing only a necklace, a gift from her husband Kevin Federline.

The singer will also confess that her six-month marriage has been challenging at times. 

She explains,  "We hit a little bit of reality, hardcore, after the first three weeks. But we handled it fine, and now things are starting to go really smooth."