When I first got heavy about thirty years ago, I let myself completely go. I turned into a slob. My mother took me shopping and made me vow to never leave the house without makeup and a hairdo. She said to me, "You were always an attractive thin girl and you can be an attractive fat girl, too."
No matter your size, you should always look your best. You will feel better about yourself and shows that you still respect yourself. It made a world of difference for me! Thanks Mom!