3:53pm PT by Graeme McMillan
'Avengers: Age of Ultron' Premiere: Watch the Red-Carpet Live Stream
Earth's Mightiest Heroes are about to assemble one more time — at the Monday world premiere of Avengers: Age of Ultron, which is being live-streamed online.
Viewers tuning in to the stream (below) will have the chance to watch Robert Downey Jr., Chris Evans and the rest of the team arrive at the Dolby Theatre in Los Angeles, with an exclusive clip from the movie debuting at the end of the red- carpet broadcast.
Also due to appear on the red carpet are Chris Hemsworth, Scarlett Johansson and Jeremy Renner, alongside writer-director Joss Whedon.
The stream begins at 6:30 p.m. PT. Avengers: Age of Ultron is released in theaters May 1.