Gwen Stefani co-wrote a song.
Gwen Stefani . , `` Rich Girl '' , and `` Hollaback Girl '' , the latter reached number one on the Billboard Hot 100 while also becoming the first US download to sell one million copies . The album produced two successful singles : `` Wind It Up '' and the album 's title track `` The Sweet Escape '' . Hollaback Girl . The song was written by Stefani , Pharrell Williams and Chad Hugo , supposedly as a response to Courtney Love 's statement that Stefani was a `` cheerleader '' in an interview with Seventeen magazine . The Sweet Escape (song) . It was written by Stefani , Akon , and Giorgio Tuinfort .