HerRoom Response: Yes, there is a Tomima Tip stating the cups run one size small.
Monique from United States
HerRoom Response: Looking at your order history you ordered the same size that you always order in all your bra purchases. This style requires a cup size increase from your normal size as stated in our fit tip.
Alex from NY, NY
HerRoom Response:We are sorry to hear of your discomfort. This bra is running small in the cups, but we feel the band is running true to size.
Alex from Minneapolis, MN
HerRoom Response: The Elomi brand is geared towards a much larger band size. You are at the very bottom of their band range, so being in the middle hook is about right. You should consider Elomi's sister brands of Freya and Fantasie where you can go even smaller into a 30 band size. But, if your cup fits, move from your 32H(D8) to a 30HH(D9) to keep your cup volume.
LF from Boulder
HerRoom Response: The cups are running small which could be giving you your feeling of tightness. Moving from a 32HH(D9) to a 32J(D10) should give you a more comfortable fit.
Margaret from New York
Mia Underwire Plunge Bra