When it comes to denim there are two main measurements you need to know. The first measurement is your waist size. Wrap a tape measure around your waist above your hips, below the navel, and read off the size. If you're not sure exactly where this point is, just measure the area where your jeans would normally sit. If you like a little extra breathing space, pop your finger in between your waist and the tape.
Next, measure your inside leg. This area runs from where the two legs join down to the ankle in a straight line. If you like to show off a bit of ankle, opt for a shorter measurement but bear in mind that for a classic look your jeans should reach the top of your shoes. It can be easier to take this measurement with your footwear on. Once you've got these two simple measurements, check out this chart to establish what size you need to go for.
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