Hayden Panettiere Dating Wladimir Klitschko?

Bikini-clad Hayden Panettiere, 20, has been spotted hanging out with Ukranian professional boxer Wladimir Klitschko, 33, in Miami on New Year’s Eve, December 31. Now that would be an interesting couple since Hayden is only 5?1? while Wladimir is listed as 6?6?! The two were already linked in the past, when the Heroes star broke it off with co-star Milo Ventimiglia back in February last year.