Overprotective boyfriend!

So I'm quite skinny and I have quite a big but due to my exercises! And my boyfriend is very overprotective about it! He tells me I can't wear leggings (which is what I would usually wear) I can't wear tight bottoms, and he tells me to cover it up because people turn around to look at it!
At the start it was cute and now it's getting out of hand?
I tried talking to him but nothing seems to work, any advice about this?