Hayden Panettiere -- I'm Mad For Wlad ... He Will Break You

Hayden Panettiere's face during her man's boxing match at Madison Square Garden this weekend can be summed up in two words ... FINISH HIM!!!

Heavyweight champ Wladimir Klitschko defended his title against Bryant Jennings on Saturday night, and while he might have done most of the work ... you gotta give Hayden major support props ... just for her gold-trimmed blazer alone.

If the world didn't know it before, HP's not only riding the Wlad train ... she's also its whistle.

All aboard.