Clothing brands that make thicker basic tops? (Balconette bra problems)

Hey all,

I exclusively wear balconette bras and always struggle with finding tops that aren't heavy sweaters that don't show the boning through the top. Sometimes I'll just layer with a tank, but it's a pain in the butt and can look frumpy to do this, not to mention it's hot in the summer to have yet another layer.

Anyone found any good brands or staples where the material isn't so tissue thin that you can see everything? For example, Express used to have some great basic stretchy tshirts where the front was double layered, and I LOVED them. (Also, I know some are going to suggest t shirt bras but they just don't work for me and my size/shape)