Girl's Best Life One Piece


Size Chart

Girl's Under Armour Swimwear Size Chart

Chest 25.5''-26.5" 26.5''-28" 28''-30" 30.5''-32" 32''-34
Waist 23"-24" 24"-24.5" 24.5"-26.5" 26.5"-28.5" 28.5"-30"
Hips 27"-28" 28"-29.5" 29.5"-32.5" 32.5"-34.5" 34.5"-36.5"

Measuring Guide

How To Measure

There are 4 key areas to measure when fitting swimwear. To achieve an accurate measurement we recommend wearing minimal clothing when measuring and holding the measuring tape straight and parallel to the floor.

Chest: Standing normally, measure around the fullest part of your chest, under your arms.

Waist: Measure the smallest area of your waist.

Hips: Putting your feet together, measure the fullest part of your hips.

Torso: Run a tape measure full circle from a point on the shoulder midway between the neck and the shoulder, over the fullest part of the chest down between your legs and back up to the starting point. Hint: start with the measure going over the back and up through the crotch for easier measuring.

Expert Tips

Children’s sizing tipically corresponds with a child’s age.

View Size Guide

Why we love this

Reach for the stars in the Girl's Best Life One Piece. Designed with next-to-skin fabric for a comfortable fit, and stretchy straps for a comfortable time in the water.

Size & Fit

  • Designed for girls 7-14
  • Fits true to size with regards to the size chart above


    • Scoop neckline
    • Double lined for added coverage
    • Racerback straps
    • Open back
    • Medium leg line
    • Full bum coverage
    • 88% Polyester/12% Spandex
    • Hand wash in cold water with our swimsuit cleaner & hang to dry
    • Imported


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