Gwen Stefani has rocked her own style since her signature rhinestone bra days with No Doubt. In this month's issue of Harper's Bazaar, Gwen admits that keeping up her look is not as easy as you'd think. Here's more:

On her ongoing battle with weight:

"Seriously, though, it's very boring and embarrassing and I hate talking about it, but it's true: I've always been on a diet, ever since I was in the sixth grade. It's an ongoing battle, and it's a nightmare. But I like clothes too much, and I always wanted to wear the outfits I would make. And I'm-" another chuckle "-very vain."

Looks like vain worked for her. She's got her own fashion line and three Harper's covers to celebrate this month.