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Size 34C Bikinis

A 34C sits at the crossroads of a larger band and a balanced cup — a combination that generic sizing often misses. You might find bikini tops labeled "medium" or "large," but they rarely deliver both a band that stays put and cups that fit your actual depth. A true 34C bikini top respects both measurements: a band that doesn't ride or slip, and cups engineered to match your cup volume without gapping or overflowing. Proper sizing makes the difference between constantly adjusting and actually enjoying your time in the water.

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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
Save $21.00Pour Moi Samoa Boost Padded Underwired Bikini Top PM20910 Black Gold Front
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Pour Moi Samoa Boost Padded Underwired Bikini Top PM20910 - Black/Gold Sale price$63.00 Regular price$84.00
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Sunsets Natalie Bikini Top 506 Black Front
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Sunsets Natalie Bikini Top 506 - Black Sale price$104.00
Sunsets Danica Bikini Top 582 Indigo Front
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Sunsets Danica Bikini Top 582 - Indigo Sale price$98.00
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Sunsets Natalie Bikini Top 506 White Lily Front
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Sunsets Natalie Bikini Top 506 - White Lily Sale price$104.00
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Sunsets Loretta Bandeau Bikini Top 500 Rambling Rose Front
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Sunsets Loretta Bandeau Bikini Top 500 - Rambling Rose Sale price$104.00

Common Fit Mistakes at Size 34C

The biggest mistake at 34C is choosing a smaller cup size to avoid a larger band. A 34B might seem like it would tighten the fit, but it actually reduces cup depth, causing spillage at the sides and an uncomfortable quad-boob effect. Conversely, sizing up to a 36C for a roomier cup sacrifices the band support you need — the band rides up and drifts throughout the day. Trust that 34C is your correct size and seek out brands that understand balanced proportions. Another common error is assuming all "medium" or "large" bikinis will fit — they rarely have the cup depth a true 34C requires. Finally, avoid bikini tops with minimal structure or thin fabrics; at 34C, even a balanced cup benefits from construction that holds its shape in the water.

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 34C? Browse our Size 34C Swimwear collection, or shop Size 34C Bras for everyday lingerie in your size.

Not sure if 34C is your correct size? Use our bikini size chart →