Actress and Wladimir Klitschko have fun over poolside lunch

Hayden Panettiere has sparked speculation she’s dating heavyweight boxer Wladimir Klitschko.

The Heroes star and the 33-year-old were snapped enjoying a poolside lunch together in Miami last week.

Hayden, 20, was all smiles as she lounged about in a pink bikini, reports the Daily Mirror.

At one point, Wladimir even playfully styled her hair with his hands.

SEE PICTURES Hayden Panettiere and boxer Wladimir Klitschko here>>