Gwen Stefani co-wrote the album "Hey Baby".
Gwen Stefani . She is the co-founder and lead vocalist of the band No Doubt that experienced major success after their breakthrough studio album Tragic Kingdom ( 1995 ) along with various successful singles , including `` Just a Girl '' , `` Do n't Speak '' , `` Hey Baby '' , and `` It 's My Life '' . `` Hey Baby '' is a song written by Gwen Stefani , Tony Kanal , Tom Dumont , and Bounty Killer for American rock band No Doubt 's fifth studio album , Rock Steady ( 2001 ) .