Robert Pattinson, Kristen Stewart, Taylor Lautner & Kellan Lutz, Ashley Greene, Nickki Reed, Jackson Rathbone, Peter Facinelli & Elizabeth Reaser, Bruno Mars

The biggest movie in the world. The day of the premiere. Today, the entire cast of "The Twilight Saga: Breaking Dawn - Part 1" is gathering on Ellen's stage for a Twilight experience you'll never forget! ROBERT PATTINSON, KRISTEN STEWART, TAYLOR LAUTNER and KELLAN LUTZ are all here, and the only place you'll see them together is on Ellen! Plus, ASHLEY GREENE, NIKKI REED, JACKSON RATHBONE, PETER FACINELLI and ELIZABETH REASER! All the characters you love from Twilight. All in one place. If you love Twilight, you simply can't miss it! Then, a musical performance by the incredible BRUNO MARS, who is here to sing the lead track from the "Breaking Dawn - Part 1" soundtrack, "It Will Rain." It's the biggest Twilight show the world has ever seen!