First you will want to measure your hips and then the hip of the jeans to compare inches - that way you can figure out how much fabric to add into the sides.
Cut open the waist down a few inches on each side, in order to make an opening for the fabric.
Measure your fabric scraps and cut them out - mine were 2 inches wide and 4 inches long. You'll want to sew the scrap pieces into the open slits, which will most likely make a "V" shape.
I used a very tight zig zag stitch and organic cotton scrap fabric that had a little stretch to it- that way I still have room to grow!As you can tell I love the hell out of my Loomstate organic jeans - they have holes, they are dirty, and maybe they look worse then worn out but these are my most favorite pair and I am sooooooo happy I saved them! Now onto my organic black skinny jeans... YAY!
See it HERE on You Tube!