My Jeanss Aree Too Bigg?

I just recently lostt alot off weightt so i needd smallerr clothess, i have 3 pairs of jeans i really likee but there to bigg onn mee. my friend recommeded thatt i putt inn thaa dryer andd they will gett smaller, but thaa jeans aree madee too stretch. will using tha dryer mess up thee jeanss?