Not true. The number in the bra size is overbust. The cup is difference between the band size and overbust measurement. For a D cup, the difference between the two measurements should be six inches, so to have a 36F, you need a woman with a 36 inch bust and a 30 inch chest. That's *really* small, and I guarantee you it is not our hostess's measurements. Bras today are not made to match the sizing scheme, which is one reason bra shopping is so hopeless.