Albus Severus Potter + Romilda Vane
There were very few people that Romilda paid enough attention to that she knew their mannerisms enough to recognize them in costume. Albus was one of them. In a way they were alike in that they tended to distance themselves. The difference of course was that he had family to pull him in from time to time. Romilda had no such luck. Sure she'd made a few surface friendships, but nothing that she felt was truly a familial connection.
"Good evening, Albus," she greeted him. "That's quite an interesting outfit," she mused not quite sure what sort of look he was going for.