1. A social gathering where guests dress and decorate according to a specific chosen theme or concept
We organized a 1980s theme party for our friend's birthday.
Organizamos uma festa temática dos anos 80 para o aniversário de nosso amigo.
2. An event where all decorations, food, entertainment, and dress code revolve around a single central idea
The Halloween theme party was a huge success with everyone in costume.
A festa temática de Halloween foi um grande sucesso com todos fantasiados.