Music·Posted on May 9, 2011Cascada Completely Rips Off Katy Perry's "California Gurls"Cascada's new song "San Francisco" sounds EXACTLY like Katy Perry's "California Gurls."by Matt StoperaBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube Like, I don't understand how she got away with this. Fucked up.