Sports Bras: Your recommended bra size is a good starting point, it's more important the bra feels comfortable on your body. The bra should fit snug. Although, bra support comes mostly from the band so its important it is quite fitted to your ribcage so your girls have a comfortable self to lean on. Getting the proper fit is crucial for breast support and feeling comfortable while working out. Be patient when searching for the right fit, sizing up and down when needed until you feel your best!