I've a very squidgy torso. Even at my skinniest, a properly fitting, comfortable bra leaves a line that can be seen through a form fitting top. I bought a lovely dress that fits really nicely but the bra strap is obvious, which I don't like. I've looked at a few smoothing slips/vests but they give me a monoboob. Any I've tried with a low front, cut below the bust sit funny on me. Have a missed a solution?