Mar 14, 2026 · Cupsize isn't just a random letter—it's the volume difference calculated from your underbust (band size) and overbust measurements. Ready to ditch the guesswork? The ‘G’ in a Gcupbra represents a specific size in the alphabetical system used for bra sizing. Each letter corresponds to an increase in breast volume, with G being one of the larger sizes, indicating substantial breast tissue capacity. A G cup is roughly either 8 or 9 inches difference between your underbust and overbust measurements. We use UK sizing, and include a FF cup size, so we would say 9 inches. Other brands that skip the FF cup w...See full list on harlowandfox.comAnother very important thing to note is that a UK G cup is very different to a US G cup. Depending which brand you’re buying from, it can make up to two whole cup sizes difference. Many brands for the DD+ cup size segment (which includes G cups, everything up to it and beyond it!) are UK based, and use UK sizing. If we take every alphabetical letter in order, without any double letters, a G would work out as DDDD. However, once you get to this size you might be better off shopping with a specialist brand, most of ...See full list on harlowandfox.comIn the industry, a typical size break where patterns will be reworked hits around a G cup. A style may work with so-called “core” A-D sizes, then be adapted for DD-G, then again for GG+, if a brand covers this entire size range - which is actually very rare! Most brands will focus on their own segment, so their customers are receiving the very best...See full list on harlowandfox.comNo, that’s not a typo – GG is just the next size up from G in UK sizing. Not all letters are double letters in bra sizes, but after DD there are several which are. For example, a woman who wears a 32G cup isn’t necessarily an actual Gcup, which is confusing, right?
