"Heroes" star, Hayden Panatierre stepped out with her new man - and he's very, very big.

Hayden Panettiere went public with her new boyfriend recently – debuting her 33-year-old boxer beau Wladimir Klitschko at an event in Best of Musical Gala in Germany.

"They appeared very cozy as they hung out, and she appeared to dote over him. When they both stood up, you couldn’t help but notice how tiny and fragile she looked next to his rippling torso," says a witness.

Do you think they'll last?
  By: Kele Scheppers