New with tag 'Marks & Spencer' 'Relaxed Slim' Jeans

On the wash label it states the colour is 'ecru', the closest colour I can get to on ebay's options under 'colour' is ivory

Size 12 Regular
Waist 32"
Rise 10"
Measuring across the top of the thigh across from the crotch is 11"
Inside leg 30.5" 
Across hem 6.5"

To check your inside leg length please lie jeans flat & measure from the crotch to the hem

To check the waist size on jeans you already have please lie them flat, don't bring the front of the waist up to match the back of the waist
Lie them flat & measure across the very top inside the waistband that is & double the measurement to get your waist measurement
Different styles of jeans sit differently & the rise can make a difference too