dress-up [dres-uhp]
adjective
1. Being an occasion, situation, etc., for which someone must be formally dressed.
noun
2. Informal. A person's best clothing, accessories, or other added features.
3. A game in which the participants put on clothes or costumes to play out or role play a role.
EX. Playing dress-up with your Pokemon would be absurdly complicated in a world of Jigglypuffs, Muks, Diglets, and other formless/limbless/oblong Pokemon.