What does the speaker believe is unnecessary for the dance?

The speaker believes that buying a new dress is unnecessary for the dance, as this implies that they feel attending the event can be enjoyable regardless of what one wears. Often, people can feel pressured to buy new clothes for special occasions, but the speaker may prioritize enjoyment and participation over appearance. This perspective promotes the idea that the essence of the event lies in the experience rather than in material considerations such as having a brand-new outfit. In this context, the focus shifts from external expectations to personal enjoyment and involvement.