Age is nothing but a number — and don’t forget it! Reaching your 40s, 50s, or even older doesn’t mean that you have to stop wearing bikinis, and we’ve rounded up some sexy celebrities over 40 who’ve proven just that. Some of these women look even better today than they did back in their ‘prime,’ if that’s even possible. Jennifer Lopez has a six pack like you can’t even believe, and Cindy Crawford and Christie Brinkley are totally ageless. Jennifer Aniston‘s body and skin are still totally enviable, as well. Meanwhile, Kelly Ripa is constantly keeping up her workouts and diet to keep her body fit and in shape, and she has one of the best bikini bods we’ve ever seen — even after three kids. From these women and plenty of others, keep clicking through the gallery to check out more stars over 40 in their sexy swimsuits. At the very least, this is sure to give you some inspiration to kick it into high gear for your own summer bod, right!?