When I first heard Katy Perry's 'Last Friday Night (T.G.I.F)  I thought about  Rebecca Black' and her song 'Friday' and wondered which came first.  Now Rebecca has filmed a cameo appearance in the video!

The 13-year-old 'Friday' singer is in the background of the  teaser for Perry's music video, and  makes me wonder how much of the video she is in.  She really looks like she's having fun, fun, fun and thinking about the weekend.

The video also featured our first look at Perry's alter-ego, Kathy Beth Terry, whom you can friend on Facebook.  I wish I had time to post Facebook pages for all my alter-egos.  Or someone to do it for me!

Here is the teaser video.  Do you think this is better than Friday, or a slick corporate copy?  Post below and tell me what you think!  DP