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Arnie Swim products generally run true to size however the fit varies between styles. Depending on your desired amount of coverage, you can either size up or down. We have put together a table of tips that should be able to help if you aren't sure on which size to select!


AUS 6 8-10 10-12 12-14
UK 6 8-10 10-12 12-14
US 2 4-6 6-8 10
EU 34 36-38 40-42 44
 Arnie Bikini Top With adjustable straps, this bikini top is flexible depending on your desired coverage. If you prefer a cheekier fit, size down on this one. If you want a bit more coverage, you can size up.
Arnie Bikini Bottom This bottom is made to be a higher-waisted fit than the other bottoms so we suggest staying true to size or sizing down if you have less to cover on the back! 
Jay Bikini Top With adjustable back straps, we would suggest sticking to your usual size for the perfect fit.
Jay Bikini Bottom The Jay's are relatively cheeky, so if you're wanting more coverage or worried about the fit, you can size up in this one!
Zoe Bikini Top The Zoe doesn't feature any adjustable options so we suggest sticking to your usual size or even sizing down if you're smaller around the back.
Zoe Bikini Bottom The perfect, cheeky yet comfortable bottom! Stick to your usual size for this one.
Florence Bikini Top This beauty is true to size but if you're in-between sizes, you can definitely afford to size dow. 
Florence Bikini Bottom Size up if you're between sizes on this one
Rachel Bikini Top Go with your usual size on this one! If you're smaller busted, size down.
Rachel Bikini Bottom True to size, with adjustable sides. If you're wanting more coverage, you can size up.
Willow One Piece With great quality material, this suit offers a lot of stretch. We would suggest sticking true to your usual size with this stunning suit!
June One Piece The June is a fuller coverage suit, so if you're safe to stick to your usual size or if you're between sizes, size down due to the stretch factor of this beauty.
Honey Wrap Skirt The Honey can be adjusted depending on the desired coverage and length, truly one size fits all.
Tia Wrap Top The Tia comes in two sizes, if you're wanting more coverage, size up.
The Tony Shirt Our beloved linen shirt is made to be oversized with a 'boyfriend' style and is one size fits all.
Kelly Shirt Dress This shirt is less oversized than the Tony, yet longer in the body creating more of a dress silhouette. One size fits all.
If you aren't sure which size to choose, feel free to email us at and we would be happy to help you find the perfect fit.
Arnie Swim.