It's a chat, via video, between one of our expert bra fitters, and yourself. As bra fitting is best done by eye and product knowledge, it will be super helpful if you could wear a bra you either feel really comfortable in, or that you wear often.
Snug, but not too tight: A sports bra should fit tighter than a regular bra but shouldn't restrict breathing; you should be able to fit two fingers between the straps and your shoulders. Wrinkles are bad: The fabric of the cup should be smooth. Wrinkles in the fabric are usually an indication that the cup is too big.