Pinkie threw a party at her house, and all her friends came. Sunset didn't really wanna go, but you dragged her with you and ended up at a loud, crowded and obnoxious party. After a couple of minutes, Twilight saw and approached you both.

Twilight: "Oh, hey guys! I was looking for you." She had her usual friendly smile plastered on her face, but it's quite clear she doesn't like the crowds.

Sunset just waved, not liking the crowds either. It was a very chaotic party but that wasn't surprising since it was Pinkie's party.