The Big Dictionary of Dreams

by Martha Clarke
Dreaming that you wear a costume means that you do not feel comfortable with your personality and, therefore, you need to play a role or to pretend in order to succeed. This attitude can hide your authentic identity.

Many myths and kids’ stories portray characters wearing masks that cannot be removed. This shows that sometimes it is possible to become whoever you want to be by paying a high price: neglecting your true self.

Dream Explanations of Astro Center

by Astro Center
If you were wearing the costume, you’re hiding your true self from someone - or perhaps from everyone in your circle.

If you take it off, something will cause you to drop the fa?ade very soon.

If you are only one amongst many wearing a costume, especially if some of the others were children, this portends an amazing and totally unexpected - but nonetheless favorable - turn of events.

The Curious Dreamer’s Dream Dictionary

by Nancy Wagaman
Pretend or playfulness.

A role you play, want to play, are considering (such as a new job), or want others to think you play.

The impression you want to give or the kind of self-image you desire.

A disguise, a wish to be disguised, or a desire to not be recognized or seen.

Hiding or deceit (or an intent for such).

See Clothes, Hat, Makeup, Hiding, Cover