I had these two pairs of jeans, the left pair too big and the right pair too skinny. I kept them in my wardrobe for years and don't want to wear them. I finally gave up and decided to refashion them into DD's pants.
Scrap fabrics that I selected for embelishments:
I sewed it onto the back side of one of the new pair of pants:
Done. Isn't it pretty...
I like freedom so I didn't deliberately keep it straight. It wiggles like a little snake.
Skinny jeans into DD's pants:
The other pair with more wiggly ruffles:
I used different patterns to make them (I don't know why!). The more wiggly pair is this pattern (I think! I'm quite confused now...) and the other pair is this pattern. I know this pattern is for knits but it works well on woven fabrics too. (I only found out because I didn't know I was suppose to use knits in the first place. )