I really like this but struggle to know what to wear underneath. I am quite booby, and a crew neck t-shirt wouldn't look right - a v neck one would be better but still not great. I have a couple of shirts, but not many, as button up ones tend to gape unless I buy them 2 sizes too big. And I wouldn't want to wear a shirt too thick as I think I would be too hot!
What would you suggest?
TIA