Hayden Panettiere, Wladimir Klitschko celebrity odd couple Le Pain Quotidien West Hollywood

And no, the starlet's giant boyfriend didn't eat her for his main course!

Hayden Panettiere and Wladimir Klitschko dined at Le Pain Quotidien in West Hollywood on Monday afternoon, and the heck with the age difference (he's 34, she's 20) -- I can't even begin to wrap my mind around how 5'1" Hayden kisses her 6'6" heavyweight boxing champ!

Awww, but look how happy he makes her:

Hayden Panettiere, Wladimir Klitschko celebrity odd couple Le Pain Quotidien West Hollywood