Size 38JJ Bikinis
Size 38JJ is the absolute pinnacle of what we carry in a 38 band — a size that almost no retail swimwear brand acknowledges exists. A larger band paired with a JJ cup requires engineering that solves genuinely complex problems around volume, weight, and support. At this size, your bikini isn't just clothing; it's essential infrastructure that has to perform flawlessly. We've curated this collection for 38JJ customers who understand that fit at this level is completely non-negotiable. Every style here has been selected because it delivers the specialized support and genuine engineering that only makes sense at a 38JJ.
Band and Cup Construction for Size 38JJ Bikinis
At a 38JJ, construction is everything and aesthetics are secondary. Your band needs to be engineered from firm, high-recovery fabric that maintains its integrity through repeated wetting and chlorine or saltwater exposure. Cup construction should feature multiple structural layers: seaming that creates support zones, internal boning or stays positioned strategically, and molded sections that hold volume. Look for underwire styles where the wire is fully encased and extends across the entire base of your cup. The fabric itself should be substantial and resistant to stretching — lightweight materials will fail you. Straps need to be wide and reinforced; they're load-bearing at a 38JJ. Every detail of your bikini is a functional choice, not a design flourish.
Cup-Sized Bikinis, Curated by Fit Experts
At The Bra Diva, we carry bikinis the same way 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 ability to hold up in and out of the water. 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.
Shopping for more styles in size 38JJ? Browse our Size 38JJ Swimwear collection, or shop Size 38JJ Bras for everyday lingerie in your size.
Not sure if 38JJ is your correct size? Use our bikini size chart →