"Good Girls Go Bad" is a song by American pop band Cobra Starship with guest vocals by Leighton Meester. It was the first single released from their third studio album, Hot Mess. The song was released digitally through iTunes on May 11, 2009. On May 8, 2009, "Good Girls Go Bad" made its radio debut on KIIS-FM with Ryan Seacrest's show. The song was produced by former American Idol judge Kara DioGuardi and Kevin Rudolf. The song went on to become Cobra Starship and Leighton Meester's first US hit and top 10, peaking at number seven on the Billboard Hot 100 and was certified double-Platinum by the Recording Industry Association of America, denoting over 2 million copies sold in the United States. The song received heavy airplay in Canada as well, debuting at 21 on Canada's radio airplay chart "Canadian Hit 30" week ending July 25, 2009. The song also debuted on Radio 1 in the UK in September 2009. The song was licensed in various media. Some of the official remixes also feature rapper Flo Rida. As a reference to Leighton Meester's vocals, the track was used on Gossip Girl for several scenes where her character, Blair Waldorf, is portrayed on the episode "The Freshmen". The song was also used in Greek's "Friend or Foe?" (renamed as "ZBZ Girls Go Bad"), in the season 4 premiere of Ugly Betty, and in the episode "Homecoming and Coming Home" of Hart of Dixie. It was also featured briefly on the trailer for the 2010 comedy You Again and appears in Watch Dogs and Boyhood. Its most recent usage was in the opening sequence of the season 16 Law & Order: Special Victims Unit episode "Granting Immunity" in 2015.