Brooke Shields goes semi-naked at 49!

Brooke Shields, who's 49, recently gave semi-nude sexy poses for Social Life magazine.

According to a source, the 'Blue Lagoon' actress was only in "strategically placed bed-sheet" in one shot, while in another she sported a dress with a very long slit, the New York Post reported.

The beauty, who started her career as a child star 1980, is married to producer Chris Henchy with whom she had two children.