Bust: Measure around the fullest part of your bust wearing a good bra, if you normally wear one.
Waist: Measure around the smallest part of your waist.
Hip: Measure around the fullest part of your hips. This measurement should be done in undergarment, making sure you pull the tape snug.
A few helpful tips
If you fall between sizes, choose the size that is closest in measurement to you. For example, if you measure 101cm in the hips and you are after pants, you are best going up to a medium size. Remember, the most relevant measurement to take for a top is your bust, and for pants, it’s your hips.
And the best part – because of the easy, loose fit - you’ll find that you can wear multiple sizes to achieve different looks.