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Size 38DD Bikinis

At 38DD, you're looking at a size that demands serious engineering. A larger band with a significantly fuller cup means your bikini needs to handle real volume and real weight — and it needs to do both while keeping you comfortable and confident in the water. Mainstream retail abandons this size entirely, leaving 38DD customers frustrated and under-supported. We've built this collection around the reality of your proportions: structured fabrics, reinforced cups, and band construction that actually supports rather than just sits there.

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Sunsets Kauai Keyhole Bikini Top 54 Black Front
Sunsets
Sunsets Kauai Keyhole Bikini Top 54 - Black Sale price$104.00
Save $64.50Swim Systems Maya Underwire Bikini Top T516 Sea Glass Front
Swim Systems
Swim Systems Maya Underwire Bikini Top T516 - Sea Glass Sale price$21.50 Regular price$86.00
Save $18.00Pour Moi Heatwave Strapless Lightly Padded Bikini Top PM86000 Red Purple Front
Pour Moi
Pour Moi Heatwave Strapless Lightly Padded Bikini Top PM86000 - Red/Purple Sale price$54.00 Regular price$72.00

What to Look For in Size 38DD Bikinis

When you're shopping for a 38DD bikini, construction is everything. Look for cups with internal structure — seaming, boning, or molded support that keeps the shape intact through chlorine, saltwater, and movement. The band should feel firm and stay in place without digging; if it's riding up in the back, the style isn't right for you. Straps matter tremendously at this size — they need to be wide, adjustable, and placed far enough back on the shoulder to prevent spillage. Avoid anything with thin fabric or minimal seaming; those details that work for smaller sizes simply won't hold at a 38DD. Trust your fit instinct — if it feels unsupported, it is.

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 38DD? Browse our Size 38DD Swimwear collection, or shop Size 38DD Bras for everyday lingerie in your size.

Not sure if 38DD is your correct size? Use our bikini size chart →