KatyPerry is trending after a trailer for her new video debuted on Facebook.
The video,featuring Perry as an awkward geek Kathy Beth Terry, is for a song called"Last Friday Night (T.G.I.F.)" and includes a brief cameo by RebeccaBlack.
Black,whose auto-tuned "Friday" became a surprise runaway viral sensation,can be spotted on the couch as two partygoers dance.
At a concert in Melbournein April, Perry treated 15,000 of her fans to her own rendition of Black's hit,declaring sarcastically that she was so glad "someone wrote a song aboutFriday."