That’s a huge jump in size Quizzer??
I have been measured twice in the past and both fitters got it completely wrong, choosing such tight bras that I felt faint in them ( like a Victorian heroine).
I now just make sure that bras are tried on, so no online shopping for them, as each bra, even in the same size seems to vary.A bra shouldn’t ride up at the back, nor should it dig in tightly under the boobs, and all should be ‘safely gathered in’.