Grammys 2012: Red Carpet Photos
It seems Nicki Minaj is not the only music star who's a fan of YouTube sensations Sophie Grace and Rosie, who covered "Super Bass." Katy Perry poses with them on the Grammy red carpet.

Ellen DeGeneres' favorite kids are taking on the hip-hop world. Sophia Grace Brownlee and cousin Rosie McClelland appeared on "The Ellen Degeneres Show" on Tuesday to perform an original rap song.

In their trademark matching pink princess dresses, the two girls stepped in front of a pair of microphones and laid down verses over a simple backing track. Sophia Grace, 8, led the song, dropping rhymes such as, "I got a real big dream/Sophia Grace and Rosie, the princess team," before belting a hook.

It wasn't their first rap attempt: the youthful duo previous performed Nicki Minaj's "Super Bass" on the daytime show. DeGeneres rewarded the pair with pink luggage for their trip back to the UK. Watch the Performance Below: