There's a bra out there for every woman. They're all made different and some brands feel more comfortable and supportive than others. Wire-free is the best if you have huge boobs. I despise wire bras. I can't sit down in them without being poked by something hard. Honestly, I don't see how women can wear them. I wear Playtex 18 hr original comfort strap and they make 40DDD in my size but not in stores. I have to order online. Those bras feel perfect to me and are extremely supportive. I'm half-Italian and inherited the ginormous boobs gene from my busty mom. Doc wants me to get a reduction because they are out of proportion to the rest of me lol.

If you're already measured then it sounds like you just need to find the right brand for you. Wireless are more expensive but also more comfortable.

Here's a link you may find helpful: Bras, Swimsuits, Women's Lingerie | Bare Necessities (hope I spelled it correctly)

You can try them on and send them back and swap or whatever. They are pricey but not cheap little things that only last a month. You get what you pay for. I got one practically free when I ordered more than two last time. They are always running deals and promo coupons.