Hayden Panettiere Legs Out, Buns Out ... For Burgers!!

2/18/2016 10:04 AM PST BY TMZ STAFF

0218-hayden-panettiere-carls-jr-commercial-PCN-01Hayden Panettiere is rolling up her sleeves, unbuttoning her shirt and slipping into short shorts to become the next burger-munching hottie for Carl's Jr./Hardees. 

Hayden showed off some mom-appropriate daisy dukes on the set of the new commercial. The undoubtedly sexy role is awesome for HP ... especially 14 months after giving birth.

It's unclear what burger she'll be promoting or how big it is, but clearly ... size is no issue for Hayden.