28HH Share definition Flag The best bra size ever.Back size 28 means she isn't fat, cup size HH means she's FINE. Wow, I can't find any clothes that fit my tiny waist and my giant 28HH boobs. I wish I was fatter, or had less boob. 28HH by miss-cee-bee June 28, 2011 0 0 Get merch Get the 28HH mug. Buy Now — $32.95 See more merch