Katy Perry took a note from Rebecca Black's "Friday" sensation — and included the 13-year-old in her video teaser for "Last Friday Night (T.G.I.F.)"
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Perry released a teaser for her latest song -- clearly an homage to the recent viral video hit. The video features a brace-faced Perry with big glasses and '80s style clothing flashing back to a party the night before. Black is sitting on the couch at the 16-second mark.
Watch the teaser: