How can I make by outie belly on less noticeable in an Underarmour shirt?

I'm on my high school's JV football team and when we scrimmage against varsity we wear these white Underarmour shirts. For those that don't know, Underarmour is pretty much skin tight, especially when you start sweating. I have always had an outie belly on that does not go into my stomach at all and looks like ping pong ball on my stomach. It shows through the Underarmour very noticeably, especially since we wear white. And to be honest, I've always been embarred about my belly on, and we usually walk by the pommies after practice so it sucks walking by all of them with my belly on poking out like some weird appendage.