My feet stopped growing around the age of 13. I was 5'2" and a size 9 shoe. But thanks to my grandma's genetics, I followed in her footsteps and grew another 2 inches after I turned 18. So I am proof that there is a chance you can still grow after puberty.
My mom is a size 8.5 sneaker, I'm a size 9 sneaker. But because of my very narrow feet I wear an 8 or 8.5 dress shoe. So I used to always steal my mom's shoes instead of buying my own. Though, she could never steal mine because she would stretch them out.