The event gets underway 10 a.m. at the Staples Center in Los Angeles. Kobe Bryant, Mariah Carey, Jennifer Hudson, Usher and Lionel Richie are among the celebrities who will participate. It is expected to run 6+ hours.

More than 1.5 million people entered a free draw for tickets and ticket holders began arriving in the early hours of Monday to collect their wrist bands for the six-hour show at the home of the LA Lakers.

Streets surrounding the stadium have been closed off by an army of 3,200 police officers.

Organizers expect upwards of one billion people to tune in via CBS & MTV in the US, BBC2 & Sky in the UK and on the web all round the world. Experts are saying the service is expected to be the biggest event in the history of the internet.

ICYDK will continue to cover the memorial all day – so check back here!