The London premiere of Harry Potter And The Chamber Of Secrets is to be webcast live on Sunday.
Daniel Radcliffe, Kenneth Branagh and Robbie Coltrane are all expected to attend the premiere at Leicester Square's Odeon cinema.
Fans can log on to www.HarryPotter.co.uk from 2.30pm to watch the footage.
Harry Potter And The Chamber Of Secrets opens in Ireland on November 15.