How to stop caring how people look at you?

I am a confident person. I am a great person and I am pretty attractive. The one thing that I'm not so great on is accepting stares and looks about my looks. I don't put too much into what people say but the way they look at me is a whole different story. I would like to be more healthy and working on my body to relieve stress and be able to more active. The problem arises where I don't want to be a sexual object again. I have big boobs, always will and have had since 9. But ever since I put on more weight I have gotten less undesirable attention and I like that a lot. Im not oogled at or not judged for being too sexual even though I just have a fitted t-shirt on so you can actually see I have big boobs and a tiny waist. I need to get over this hurdle before I lose the weight because I feel like this is the biggest hurdle because I don't want to lose weight if it welcomes unwelcome attention so I don't want to work out because of it.