Its all about getting your shirts tailored.

I have had to resort to that for my dress shirts otherwise I look like a slob with all the excess cloth hanging out around my midsection. Just like you, they suggested an athletic cut but they are pretty hard to find and I think paying an extra $10 bucks to have a shirt tailored is well worth it.

Btw where are you finding atheletic cut shirts? I gave up on seeking them out a while ago because when I did find them the stores had a horrible selection.