Miranda Cosgrove and Victoria Justice sandwich in guest star Kenan Thompson in this new still from the big crossover event, iParty with Victorious!

In the episode premiering NEXT weekend, Carly (Cosgrove) is dating a boy named Stephen who divides his time between parents living in Seattle and Los Angeles.

When she suspects that Stephen is cheating on her after seeing a photo of him and Tori (Justice) together and plans a trip to Los Angeles to catch him in the act. After convincing Tori that Stephen is cheating on both of them, Carly and Tori come together to plot their revenge at the party.

Elsewhere at Hollywood Arts, Andre (Leon Thomas) is psyched because Kenan Thompson has offered to let him throw a small party in his awesome new house but the party spirals out of control when Rex tweets a mass invite.

Want a sneak peek? Check out TWO clips below from the episode!

“iParty with Victorious” premieres Saturday, June 11 @ 8PM ET/PT on Nickelodeon. 10+ pics inside…