Sizing Guide

We want you to feel confident, comfortable, and supported in your Luna pieces
Because every body is different, sizing can feel tricky — this guide is here to help you choose the best fit.

 


 

How to Measure

We recommend measuring yourself with a soft measuring tape, close to the body, not loose:

  • Waist: Around the narrowest part of your waist

  • Hips: Around the fullest part of your hips

  • Bust: Around the fullest part of your chest

Compare your measurements to the tables below for the best fit.

 


 

Leggings, Shorts & Bottoms (Luna + Numeric Sizes)

Luna Size

SA / UK Size

Waist (cm)

Hips (cm)

S

6–8

64–70

90–96

M

8–10

71–77

97–103

L

10–12

78–84

104–110

XL

12–14

85–91

111–117

 


 

Tops & Crop Tops

Luna Size

SA / UK Size

Bust (cm)

S

6–8

84–90

M

8–10

91–97

L

10–12

98–104

XL

12–14

105–111

 


 

Sports Bra Size Guide

Our sports bras are designed for comfort and movement, not extreme compression (unless stated otherwise).

Step 1: Find your bra size

  • Measure underbust (around your ribcage, just under the bust)

  • Measure bust (around the fullest part of your chest)

  • The difference determines your cup size

Step 2: Match to Luna sizing

Luna Size

SA / UK Bra Size

S

30B–32C

M

32C–34D

L

34D–36DD

XL

36DD–38E

 


 

General Fit Advice

  • If you are between sizes, we generally recommend sizing up for comfort

  • Activewear should feel supportive but never restrictive

  • Fit may vary slightly between collections due to fabric, cut, or stretch

  • Lighter colours may feel slightly firmer when first worn

 


 

Squat-Proof & Coverage

Most Luna leggings are squat-proof when worn in the correct size.
If leggings feel too tight, restrictive, or see-through, sizing up is usually the best option.

 


 

Tops & Bras

  • If you prefer a snug, supportive fit, stay true to size

  • If you prefer a more relaxed fit or are between sizes, size up

  • Adjustable straps offer extra flexibility

  • Fuller bust? Consider sizing up for comfort

 


 

Still Unsure?

If you’re unsure between sizes or styles, we’re happy to help
Please contact us before placing your order so we can guide you toward the best fit and help avoid unnecessary returns.

info@lunaactive.co
orders@lunaactive.co (for order-related queries)