I ordered a 38D because my girls need it.  This bra provides excellent coverage and is very comfortable.  If you will be doing high impact running or jumping, you may want to get a tighter size because mine fits perfectly, but the girls didn't stay as "put" as I needed them to.  Would recommend for low impact cardio (elliptical or walking) but jumping exercises and heavy running, maybe re-think it or go a tighter band size to keep them more secure.