Since fitting sizes vary from style and brands, our sizing guide is tailor-made for Frederick's of Hollywood bra cup sizes to best help our customers locate the bra that fits them best. If you usually wear an F Cup or a DDD Cup size but received the other, don't worry! This is because the particular bra style purchased is the same size for both of those cups. For Frederick's of Hollywood bras, there should be very little difference, if any, between the DDD & F cup sizes.
We hope this answered your question! Feel free to reply to this email if there are any further issues.