At the Ceremony party of Mikaelson, all the people in the party wearing beautiful dresses and suits. And while Elijah was the older of Mikaelson speech, Klaus in second floor noticed you with your ball gown mermaid style amethyst colours.

Elijah: Cheer! raised the glass

all the people doing their cheers, as all the people talking and dancing at the dance floor, Klaus only looked at you from far away