It was Hermione.
"But she didn’t look like Hermione at all. She had done something with her hair; it was no longer bushy but sleek and shiny, and twisted up into an elegant knot at the back of her head. She was wearing robes made of a floaty, periwinkle-blue material…” - Ch23 | THE YULE BALL
Wasn’t her dress pink?
Best gif award to you
