How to Make Any Pair of Jeans Perfect for Maternity
This is much better than the hair tie around the button trick! :: How to Make Any Pair of Jeans Perfect for Maternity via @vanessacrafting

Boba - Baby Carriers + Wraps
Annie's Attic: Spark Your Creativity, Connect Through Craft
Save your too-tight favorite pair of jeans or slacks with these inserts. You also get the look of tailored pants but the comfort of elastic-waist pants. Step-by-step illustrated instructions show how to stitch into finished slacks or alter a favorite pattern to add inserts. Includes two inserts PLUS 1 yd. of 6" wide elastic to make six more pair.