It's one thing to give birth and another to look good in a bikini! After entering motherhood, many women retire their two-piece swimsuits, but celebrities are the exception. While lots of moms have been wrapping up and braving cold weather in the past month, some famous ladies have been stripping down and strutting their fabulous stuff on beaches and while yachting. Check out the curves that having multiple kids (and likely working out!) have given these gals.