Hayden Panettiere is Miami Marvelous

Hayden Panettiere shows off her pearly whites as she walks barefoot on the beach in Miami, Florida, on Thursday afternoon (December 31).

The 20-year-old Heroes hottie was seen hanging out with Ukrainian heavyweight boxer Wladimir Klitschko during the New Year’s holiday. Wladimir, 33, currently is the IBF, WBO, IBO, and Ring Magazine world heavyweight title holder.

Hayden was also spotted out supporting her fave sports team the L.A. Lakers on Christmas Day.

15+ pics inside of beach beauty Hayden Panettiere…