You don’t always get to choose how you feel about your body but you can definitely choose how you speak about it – and making the choice not to speak about it like it’s something you ought to be ashamed of will get you a long way towards respecting it yourself if you’re not quite there yet.
You never need to justify the way your body is, or apologise for it to anyone. You aren’t under any obligation to explain why you look the way you do. Your body, your business. Always.