Gwen Stefani has told the latest issue of ‘Elle’ magazine that she once received song-writing help from Prince.

“Prince, who is one of my idols, gave me some advice when I worked with him: “Have you ever just tried writing a hit? Like, don’t just try writing a song, try and write a hit song.” I remember him saying that and me thinking, Yeah, you’re right. Why would you write anything else?,” she says.

Stefani goes on to confess that she did not enjoy performing while pregnant with her sons, Kingston, four, and Zuma, two.

“It was horrible. Certain songs would make me want to puke. You feel pretty gross when you are first pregnant. You don’t feel cute, you feel disgusting,” she admits.

Watch Gwen perform ‘Hollaback Girl’ at the 2005 Teen Choice Awards below.