Amanda Bynes didn’t behave like a prom queen Monday night.
The former fashion student made a surprise appearance at NYLON magazine’s It Girl Prom at New York City’s Gilded Lily, E! News confirms. “Amanda was wearing sunglasses inside and kept changing from a jean jacket to a leather jacket,” a partygoer says, noting that Bynes was often “walking back and forth.” Bynes, 28, “was not drinking” and she hoped to keep a low profile. “One person went to take her picture and she ran up to them and said, ‘You better delete that now,'” the source says. “She was very offbeat.”