Use our size chart and conversions to find your best fit. All measurements are in cm.

How to measure:
1. BUST: measure around the fullest part of the bust and straight around the back
2. UNDER BUST: directly under the bust and straight around the back
3. WAIST: the narrowest part of the abdomen, between the bottom of the ribcage and the hips
4. HIPS: the fullest part of the hips, ensuring the tape is straight around the body

Good Days Size  AU/UK US EU Bust (cm) Under-bust (cm)  Waist (cm) Hip (cm)
XS 6 2 34 79 69 64 89
S 8 4 36 84 74 69 94
M 10 6 38 89 79 74 99
L 12 8 40 94 84 79 104
XL 14 10 42 99 89 84 109

If you are unsure of which size to choose, we would recommend sizing down if you prefer a more compressive fit or sizing up if you prefer a more relaxed fit. 

Leggings length: leggings have a 61cm inside leg (measurement from crotch to inside ankle hem). If you are 5'4 /162cm or taller these will be 7/8 length, landing just above the ankle. If you are under 5'4 /162cm then they will be a full length fit.