Sophia Grace Brownlee, Rosie McClelland, Jennette McCurdy, Ariana Grande

British sensations and Ellen Show superstars Sophia Grace and Rosie are charming viewers again, this time with another guest spot on Nickelodeon's Sam & Cat.

New season, new sexy stars. See our fall TV crushes! 

In an exclusive clip from Saturday's episode "#RevengeoftheBritBrats" below, con artists Gwen (Sophia Grace) and Ruby (Rosie) drop in on Sam (Jennette McCurdy) and Cat's (Ariana Grande) apartment pretending to be friendly, but intending to drive a wedge between the roommates. When Sam and Cat catch on to this, they turn the tables on the not-so-innocent connivers.

Watch:

Sam & Cat airs on Saturdays at 8/7c on Nickelodeon.