Looking for Halloween events in Los Angeles? Looking for the top 19-and-over happening on October 31st 2016 in Los Angeles? #Skreem happening inside the World Famous Avalon Hollywood is Halloween best event for under 21 in Los Angeles. Hollywood's only collegiate Halloween costume extravaganza! Hottest and ONLY 19+ Halloween party in Hollywood! Halloween is best excuse to dress provocatively, drink excessively and be (or go home with) someone else for a night. So get your costume, posse and designated driver in order. Over 1500 people expected. Tables: Crystal Head Vodka 2 for $500 | Ciroc 2 for $600 | Call/Text +1 (310) 749-9029. All costumes welcomed.