Why hasn't this existed?
Most companies today design for the industry standard size (usually 36C) and then scale that design up and down, not taking into consideration the unique fit challenges of each size.
So, anyone that's smaller or bigger has less than perfect bra fit.
Unfortunately, small cup sizes are often the most overlooked within an industry catering toward the “average.” But there is no real average. We are all unique shapes and sizes. We found women with small cup sizes are often the most misunderstood.
Think about it - when was the last you saw a 36AA or 38AA? Even the largest plus sized retailer in America starts bra sizes at C - further propelling the misconception that if you're skinny, you must have small boobs and if you're larger, you must have big boobs. In reality, any size girl can have any size boobs - so we're here to fill the gaps.