Ke$ha is heading to ... Nickelodeon? The not-quite-family-friendly 'Tik Tok' singer will guest star and perform on episode of 'Victorious.'

In the episode, Victoria and her friends try to win a private Ke$ha concert by piecing together the singer's name from items found at the bottom of ice cream containers.

"It's a private concert, and yeah, I will say that the costumes are awesome and there's definitely lots of glitter," Victoria Justice told Entertainment Weekly.

"It was really fun to film," she said. "It's the first time on my show that we've had a successful radio artist perform on the show. Ke$ha's kind of edgier, and I think that it's cool to bring that element to the show."

In other TV news ...

• When the 'American Idol' contestants get the boot, they won't be go to visit David Letterman anymore. 'Idol' castoffs will now appear on 'The Tonight Show with Jay Leno' on Fridays. [NBC]

• Ready to head back to 'Treme'? The HBO series' 11-episode second season premiere is scheduled for April 24. [HBO]

• The 'Top Chef All-Stars' finale was seen by 2.77 million viewers. It was a season high for the cooking competition series. [Bravo]