Fits well exactly what I was looking for.
"I am 125lbs, I only wear bralettes and in normal stores I get a medium so I usually go off that for bikini top sizes and a Medium fit perfectly, it wasn’t too big or too small I would say it was just right, just how it should be. I am 36 years old so I have difficulty assessing sizes when it comes to more youthful brands such as this one, but medium was accurate for me."