Christina Aguilera Joins Hayden Panettiere for Sexy 'Lady Marmalade' Performance on 'Lip Sync Battle'

Hayden Panettiere is putting aside her Nashville character, Juliette Barnes, and channeling her inner Christina Aguilera.

Hooking up her corset and strapping on her thigh highs, the 26-year-old actress gives an epic performance of "Lady Marmalade" on this Thursday's Lip Sync Battle, as she goes head-to-head against Eva Longoria.

WATCH: Beyonce Crashes Channing Tatum's Epic 'Lip Sync Battle'

In a sneak peek of the episode, Panettiere -- wearing a big crimped wig and red lingerie -- commands the stage decked out as the "Dirrty" singer from the song's iconic 2001 music video that also featured Pink, Mya, and Lil’ Kim.

And just when you think the act can't any better, Panettiere is joined by a real soul sister -- Aguilera herself!

WATCH: Nina Dobrev Grinds on Tim Tebow in the Sexiest 'Lip Sync Battle' Yet!

Things certainly appear to be looking up for Panettiere following her battle with postpartum depression. She recently spoke with ET at the Critics' Choice Awards, where the actress revealed she’s been surrounded by love.

"I've gotten an incredible amount of support and I was actually really surprised cause I feel like I grew up in this industry that, in my mind, was very judgmental," Panettiere shared.

For more, watch the video below.

Lip Sync Battle airs Thursdays at 10 p.m. on Spike.