2013

HAYDEN PANETTIERE, 23

The Nashville star sure isn't singing the blues in this purple triangle bikini top and tassled bottom, which she wore in Miami. Exercising is a regular thing for the petite actress, but not everything: "If I push myself too hard, my brain starts thinking of working out as a burden instead of something I enjoy," she tells Self.com. "Three times a week is a really healthy amount."