UK 28JJ is the same as US 28N, so this page brings together bras for a very full bust on a very small band. At this size, the band should feel firm on the loosest hook, the cups need serious depth so nothing spills at the top or sides, and the straps should only fine-tune the lift. If you are unsure whether UK 28JJ is the right starting point, use our Bra Size Chart before choosing your next style.