Size S is really small for my 34B bust, and the material is pretty thin, but the cutting is great.

this top is so cute. thin fabric but in a good way, very durable and high quality. i need it in different colors now!!

I have a 33” chest with a B cup and the small is just right. I definitely wanted it to fit on the snug side to feel like the ladies are being held in place/smoothed but not too snug where I’m dying like a sports bra. It has surprisingly high coverage beneath the armpits so if that is an area you have issues then this would be great. Like the sides are up under my armpits giving full coverage. I LOVE how the straps are far away from my neck so they don’t show if I wear a more open neck shirt over this. I also just prefer how it looks. I hate it when straps are close to my neck. The strap placement alone makes me love this piece. The straps don’t slip off my shoulders though! The material is very soft and smooth. It was a little thinner/lighter than I expected but not in a bad way (it’s not see through and still very nice quality). This makes it great for the hot weather and layering though. People with smaller cups could totally get away with using this as a bra as long as the size is right and it’s snug enough. Overall it’s exactly what I wanted and is a perfect layering piece.