Some useful vocabulary about Carnival

Dressing up: When I was a child I loved to play dress up; I could be either a fairy or a princess.
                       They dressed themselves up as cartoon characters.
                        Dressing - up clothes.
                        I went to the party dressed as a pirate.

Look like: You look like a scary ghost.   

Fancy dress Costume

Fancy - dress  ball

Fancy - dress party

Fancy dress shop

Mask: Wear a mask