Dress-up

Origin

From dress up.

Full definition of dress-up

Noun

1. (informal) A child's game of putting on different clothes and pretending to be different people.
• 1995, Working Mother, The Power of Dress-up (volume 18, number 2, page 48)One day, I happened to catch a glimpse of my daughter Annie, age three, playing dress-up with her pals at the family day care program she attends twice a week. Each child had a hat on his or her head and was pretending to be a circus clown.