Who Has Gwen Stefani Been Trying To Work With For 10 Years?
The Voice USA coach reveals she's been trying to land a collaboration with this British rocker for almost a decade...
She went on to reveal that Sia has penned a song for her album titled Start A War, saying: "She's a genius and I love working with her.
"There's a song on the record called 'Start A War' that she wrote that I'm very grateful for. I think that girls are gonna love that one."
Gwen said: "I'm gonna definitely go back in with Pharrell, and I know that I want to work with Diplo. There's so many people!"
Shedding some light on her duet with Charli XCX, the blonde babe crevealed: "She (Charli) wrote with Benny (Blanco) and then I wrote with Benny separately. I wrote her an email and was like, 'This is so weird that I haven't ever met you and now we have this song'."