YouTube has announced it will broadcast the star-studded LA reading of Duston Lance Black’s Proposition 8 play this weekend.

Brad Pitt was confirmed today as the actor playing Judge Vaughn Walker in the play which details how the California ballot measure which revoked gay citizens’ right to marry was ruled unconstitutional for the first time in 2010.

Actor, director and AFER co-founder Rob Reiner announced that the play would be broadcast live on the American Foundation for Equal Rights (AFER)’s YouTube channel this Saturday evening.

He said: “I hope you’ll join me, George Clooney, Brad Pitt, Martin Sheen, Kevin Bacon, John C Reilly, Jamie Lee Curtis, Christine Lahti, Jane Lynch, Matthew Morrison, Chris Colfer and Jessie Tyler Ferguson.

“You see we had a problem, we couldn’t find any famous people to be in the play.”

The play, 8, focuses on the trial’s historic closing arguments in the summer of 2010. Matt Bomer, the White Collar actor who recently confirmed he was gay, will also appear.

UK audiences will have to set their alarms or settle in for a late night, however, as although the show starts at 7.30pm PT, it will be 3.30am GMT on Sunday morning east of the Atlantic.