I ordered my regular bra size, and the fit in the band at the tightest setting was way too loose which means the bra offers no support whatsoever. If it fit, seems like it might be pretty good, but I don't really know. I got a nearly perfect and very supportive fit with another bra I'd ordered at the same time, the Champion Shape Scoop Sport Underwire, in one band size down from my regular size (that was all they had but worked out well) and usual cup size.