What do most girls wear to prom?

Could you elaborate on the typical attire worn by females to the prom? Are there any specific fashion trends or colors that are commonly seen among the attendees? Is there a distinction between the attire worn by juniors and seniors, or does it largely remain consistent across all grade levels? Furthermore, do girls tend to prioritize comfort over style, or is it more of a balance between the two? Lastly, are there any cultural or regional differences in the clothing choices made for the prom?