I knew Gwen Stefani was in shape, but this is ridiculous... in a good way of course! Here she is performing in LA and that my friends is a six pack! Ladies, Gwen is a mother of two, so no more excuses! Sure, she probably has tons of help, but you need more than help to get a body like that, you need determination. So what you waiting for?! Go get some!!     Related Articles: Gwen Stefani's Sexy Tummy In A Bikini Gwen Stefani: Most Fashionable Celebrity Parent? Gwen Stefani's Sweet Escape Video Gwen Stefani's Legs Are Thick And Delicious Photos: WENN.com