With a fashion landscape that’s flooded by buzzy, Instagram-friendly brands, whose sizes often only go up to DD, and measuring techniques are limited, the need is clearly there. For proof, look at the many people joining r/ABraThatFits thinking they were one size, only to discover they’re at the totally opposite end of the spectrum. “Results say 36DD but I’ve been a 36A most my life,” wrote one user recently. “Thought I was a 36D for years but apparently I’m a 36G cup according to the calculator. To be quite honest, I’ve never even heard of a G cup. I always thought anything beyond a DD was humongous, according to what bra sizes I’ve seen sold in shops,” wrote another.