gwen-mc-2-460.jpgMarie Claire

gwen-cover-mc-230.jpgGwen Stefani covers the new issue of Marie Claire, and the 42-year-old singer shows off her rockin' abs and some sexy outfits in her photo shoot for the mag.

While she's busy promoting No Doubt's new album and designing clothes, Gwen reveals that her most important job is as a parent, and she's more focused on family than anything else in her life.

On the challenges of raising two young sons, Gwen tells the mag, “From the moment they wake up, they start beating on each other. I never knew they would be so physical. They’re just starting to play real well together, but with a lot of fighting. They do look out for each other – especially the little one, he really loves his older brother.”

So what about having a third child? "I really, really, really wanted one about two years ago. And it didn’t really work out. So… I feel good with what we’ve got. Everything works out how it should. You can’t plan anything, right? You can try."

Gwen also opens up on her ten-year anniversary with hubby Gavin Rossdale, telling the mag, "My biggest accomplishment is my marriage so far. Because it’s hard, everyone knows it’s hard. [Marriage] is something that I always wanted to do successfully. It was a dream of mine. I like the official-ness and the family-ness of it all, having the same name and making decisions together.”

On taking it easy when it comes to her workout routines, Gwen says, "This last year I kind of stopped working out. I think my body just needed a break. And so I did that, and focused more on feeling good as opposed to beating myself up."

Click thru to see another hot shot of Gwen!