She's baaaack!

After a hugely successful November guest appearance on Fox's Glee, Gwyneth Paltrow returns to the series as substitute teacher Holly Holliday.

On Tuesday's episode -- Paltrow's second appearance -- the actress jams with McKinley High's New Directions glee club.

Clad in a black leather jacket, Paltrow, 38, belts out Joan Jett's "Do You Wanna Touch Me" while bopping around the choir room with Glee's Lea Michele, Cory Monteith, Mark Salling and others.

In the episode, titled "Sexy," Paltrow's Holliday takes a full-time gig as the school's new sex-ed teacher. One key piece of advice Paltrow offers? "Just remember, when you're having sex with someone, you're having sex with everyone they've ever had sex with," she says in the above clip. "And everyone's got a random!"

Check out the full performance clip above and watch Paltrow's episode Tuesday at 8 p.m. (EST) on Fox.

By Allison Corneau for For more Channel Surfing, click here.