 " Cool " was released as the fourth single from the album on July 5 , 2005 . The song fared moderately on the charts , reaching the top 10 in Australia and New Zealand , as well as the top 20 in Denmark , Germany , Ireland , Norway , the UK and the US . " Luxurious " was released as the fifth single in October 2005 . The single version features rapper Slim Thug . The song was less successful than the previous singles from the album , peaking at number 21 on the Billboard Hot 100 . " Crash " was not originally planned as a single , but due to Stefani 's pregnancy , her second solo album was delayed , and the song was released as the sixth and final single from the album on January 24 , 2006 . 
