Size 30JJ Bras Sized to Actually Fit
A 30JJ carries one of the highest cup volumes in the entire lingerie size range on one of the narrowest, firmest bands available — a combination that only the most dedicated specialist brands even attempt to build for. At this size, every construction element must perform at the highest level: deeply structured cups, the heaviest gauge underwire available, wide fully cushioned straps, and the most robust side panels to keep everything anchored and shaped through every movement all day. The styles in this collection are sized to a 30JJ bra measurement, built from the ground up for this exact combination. For a size this rare, finding bras that genuinely fit has always required a specialist. This is that collection.
Fuller Bust Bras, Curated by Fit Experts
At The Bra Diva, we carry bras by actual bra size, not just by small, medium, or large. Every style in this collection is selected for its construction quality, true-to-size fit, and all-day wearability. Our team has been fitting customers since 1987 at our Cherry Hill, NJ boutique, and we bring that same expertise to every size we carry online.
Explore bras in similar sizes: Size 30J Bras | Size 30K Bras | Size 32JJ Bras
Also available in swimwear: Size 30JJ Swimwear
Not sure if 30JJ is your correct size? Use our bra size chart →
