Girls, Am I too old to wear a two piece swimsuit since I am in my early 40s?

I have a friend that says you shouldn't wear a two piece swimsuit after a certain age. I have the body for one and my boyfriend loves it. Is there any reason why I shouldn't wear one? Will people think "She is too old to be wearing that?"

Girls, Am I too old to wear a two piece swimsuit since I am in my early 40s?
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