Demi went to Mexico on vacation where she had fun in the sun and swimming in the surf.
Check out the beautiful singer in her black bikini, with silver accents. It is a style very inspired by glam rock from the 1980's.
But the bikini, however cute, was a problem. It was one of those bikinis that doesen't stay in it's position. As she was swimming and having fun the bikini was shifting and showing off more skin than Demi would have liked.