Last Friday Night (T.G.I.F.) is a song by American singer and songwriter Katy Perry. It was released on 6 June 2011, with the music video being released on June 14th. The song reached number one on the U.S. Billboard Hot 100Canadian Hot 100 in August 2011.
The music video features several celebrities: Rebecca Black, Corey Feldman, Debbie Gibson, Kenny G, the band Hanson, Kevin McHale and Darren Criss.