SIZE CHART AND FIT GUIDE 

At NAIA we believe fit never goes out of fashion, that is why we fit all of our swim and resort wear a minimum of 5 times until it fits perfectly.  Here are few helpful tips to assist you while buying your perfect NAIA piece.  

  • Our collection fits true to size. 
  • Bikini tops and bottoms are sold separately, you can mix and match to find the best size and look for you. 
  • Some styles feature our 'secret sculpt' offering comfortable stomach control. 
  • Different styles offer different amounts of coverage, bear this is mind when making your choice. 
  • Some styles have removable pads, others built in cups and hidden shelves for support. 
  • All sizing is shown in UK sizing please refer to the International size chart for conversions. 
  • If you are in-between sizes, we recommend sizing up in all of our styles. 

If you do have any questions, please contact our fit experts on fitexpert@naiabeach.com who simply love talking swim and will be happy to help.

 

 TOPS
UK SIZE BUST (IN) BUST (CM) CUP SIZE (IN)
6 30-32 76-82 A-B
8 32-34 82-86 B-C
10 34-36 86-91 C-D
12 36-38 91-96 D-DD
14 38-40 96-102 DD-E
16 40-42 102-107 E-F
18 42-44 107-112 F-FF

 

 

 BY CUP SIZE

6 30C 32B
8 30D 32C
10 30DD 32D 34C 36B
12 30E 32DD 34D 36C 38B
14 30F 32E 34DD 36D 38C 40B
16 30FF 32F 34E 36DD 38D 40C 42B
18 30G 32FF 34F 36E 38DD 40D 42C 44B

 

 

 BOTTOMS
UK SIZE WAIST (IN) WAIST (CM) HIPS (IN) HIPS (CM)
6 24-26 60-66 33-35 83.5-88.5
8 26-28 66-71 35-37 88.5-93.5
10 28-30 71-76 37-39 93.5-99
12 30-32 76-81 39-41 99-104
14 32-34 81-86 41-43 104-109
16 34-36 86-91 43-45 109-114
18 36-38 91-96 45-47 114-119

 

 

 ONE PIECE
UK SIZE WAIST (IN) BUST (IN) HIPS (IN) HIPS (CM)
6 24-26 30-32 33-35 83.5-88.5
8 26-28 32-34 35-37 88.5-93.5
10 28-30 34-36 37-39 93.5-99
12 30-32 36 39-41 99-104
14 32-34 36-38 41-43 104-108
16 34-36 38-40 43-45 109-114
18 36-38 42 45-47 114-119

 

 RESORT/INTERNATIONAL SIZING

UK / AUSTRALIA 6-8 (XS) 8-10 (S) 10-12 (M) 14-16 (L) 18 (XL)
US 2-4 4-6 6-8 10-12 14
FRANCE 34-36 36-38 38-40 42-44 46
ITALY 38-40 40-42 42-44 47-48 50
DENMARK / GERMANY 32-34 34-36 36-38 40-42 44