I'm a larger cup, smaller waist size, I got the 10H, I was worried first time ordering. I was so pleasantly surprised. The bra is stunning. It is a little larger in the band, I have to put on the 2nd hooks but everything else fits so well. I wasnt expecting to love this style so much as. It's comfortable, I dnt find any issues I dnt normally get wearing bras as a bigger chest size person. I wish I had ordered a second while they had my size.