i wouldnt really like to say huni as nothing is certain and different sizes work differently on different people. i had a 34a and had 325 unders which took me to a 34dd i then had 2 kids and have recently has 525 overs and i am wearing a 34e sports bra i had empty skin after the kids that needed filling.I would guess you would go to a big e or f with that size x x