One Piece Sizing
| SIZE | US | WAIST | 7" HIP |
| XS | 2/4 | 24-25 | 34-35 |
| S | 6 | 26-27 | 36-37 |
| M | 8/10 | 28-30 | 38-39 |
| L | 12 | 31-32 | 40-41 |
| XL | 14 | 33-34 | 42-43 |
| XXL | 16 | 35-36 | 44-46 |
Extended One Piece Sizing
| SIZE | US | WAIST | 7" HIP |
| 0X | 16W | 35-37 | 46-47 |
| 1X | 18W | 38-39 | 48-49 |
| 2X | 20W | 40-41 | 50-51 |
| 3X | 22W | 42-43 | 52 |
| 3X | 24W | 44 | 53 |
How To Measure
Bust Size
Measure the fullest part of their chest, under the arm.
Waist Size
Measure around the narrowest part of your natural waistline.
Hip Size
Measure the fullest part of your hips (usually 7" down from your waistline).
One Piece Sizing
| SIZE | US | WAIST | 7" HIP |
| XS | 2/4 | 24-25 | 34-35 |
| S | 6 | 26-27 | 36-37 |
| M | 8/10 | 28-30 | 38-39 |
| L | 12 | 31-32 | 40-41 |
| XL | 14 | 33-34 | 42-43 |
| XXL | 16 | 35-36 | 44-46 |
Extended One Piece Sizing
| SIZE | US | WAIST | 7" HIP |
| 0X | 16W | 35-37 | 46-47 |
| 1X | 18W | 38-39 | 48-49 |
| 2X | 20W | 40-41 | 50-51 |
| 3X | 22W | 42-43 | 52 |
| 3X | 24W | 44 | 53 |
How To Measure
Bust Size
Measure the fullest part of their chest, under the arm.
Waist Size
Measure around the narrowest part of your natural waistline.
Hip Size
Measure the fullest part of your hips (usually 7" down from your waistline).
Free Shipping
over $100
Easy Returns
within 14 days
Beach Ready
styles for all
If something does not work out for you, here is your guide to return it. Please read the terms carefully before making a return.
Returns of regular priced merchandise must be postmarked within 14 days of receiving your order to be eligible for a refund. All Sale Items are Final Sale items and are non-returnable. Any returns postmarked after 14 days of delivery are not eligible for refund or store credit and we are unable to re-ship the items. Refunds are issued to the original form of payment.
All returned items must be received in their original condition. Unworn, unwashed, with tags attached, and in original packaging. The hygienic linings of all bottoms must have not been torn or tampered with. Swimwearkeywest.com reserves the right to refuse a refund for any reasons that are not in line with our return/exchange policies.
Unfortunately, we cannot accept returns on gift cards.
