P!nk & No Doubt perform duet

Gwen Stefani and P!nk on stage

No tickle me with a P!nk feather! Gwen Stefani and her band indie rock band No Doubt were joined on stage Friday evening by pop singer P!nk in Las Vegas. The 'Blow Me (One Last Kiss)' star performed 'Just a Girl' with front woman Gwen Stefani at the iHeartRadio Music Festival. "I just got off stage from the raddest surprise performance with No Doubt. She really is that cool. #imjustagirl," Pink tweeted about Stefani afterwards. Watch the duet, HERE!