To fasten or secure something, such as a button, zipper, or clasp. She asked him to do up the buttons on the back of her dress.
To renovate or redecorate a building or room. They decided to do up the kitchen to make it more modern and functional.
To wrap or package something, especially as a gift. He did up the present with colorful paper and a big bow.
To style or arrange hair in a particular way. She did up her hair in an elegant bun for the wedding.