Yes, button up shirts, an extra layer (tanktop-something) and shirts with prints/stripes/sorts.
Also maybe a realistic view from a friend, we tend to feel too insecure about our chest and a lot of times it's actually not that bad. Especially us smaller guys (I wear a small, different brand, but still, small).
And if you wear tight fitting shirts, you can always try wearing a size bigger. (I don't know how tall you are, but most small sized male shirts are a bit baggyish for me already)