Katy Perry has unleashed her inner-nerd to portray alter-ego Kathy Beth Terry, the 13-year-old character in her upcoming video, "Last Friday Night (T.G.I.F.)."
The music clip also features a cameo by 13-year-old Rebecca Black, known for the viral "Friday" YouTube music video, which has received over 160 million views since debuting 3 months ago.
Perry, 26, covered Black's "Friday" at a recent concert in Melbourne, Australia, declaring that she was so glad that "someone wrote a song about 'Friday.'"
Perry donned headgear and glasses to portray Kathy Beth Terry and made a promotional YouTube video, seeking fans for her fictional character's Facebook page.
Perry's husband Russell Brand was recently deported from Japan, where the pop star was performing shows to promote her "California Dreams" album.
Brand, 35, and Perry got married on October 23, 2010 in a traditional Hindu ceremony in Rajasthan, India, where Brand also proposed to the singer. The two began dating in September 2009 after the singer performed on the MTV Video Music Awards that were hosted by Brand.
Watch Perry's videos for "Nobody LIKES Kathy Beth Terry" and the promotional trailer for "Last Friday Night (T.G.I.F.)" below (Black appears at the 0:16 mark). The full-length video is scheduled for release on June 14, 2011.