Fans in Trafalgar Square for the big “Harry Potter” premiere. (JOEL RYAN/ASSOCIATED PRESS)

The stars of “Harry Potter and the Deathly Hallows Part 2” are walking the red carpet right now in London’s Trafalgar Square. Watch a live stream of all the action below. Watching at work? No problem. Just throw an invisibility cloak over your computer monitor and your boss won’t notice a thing.