Ryan Seacrest's New Year's Eve celebration is shoring up its slate.
Justin Bieber has been added to the west coast party lineup on the ABC telecast, Dick Clark's New Year's Rockin' Eve, while "Gangnam Style" star Psy will take the stage in Times Square.
Other new additions to the west coast party include Jason Aldean, Greyson Chance, Ellie Goulding and The Wanted. They join previously announced Black Eyed Peas member Fergie, Brandy, Flo Rida, Karmin, OneRepublic and Pitbull.
Over in New York, Psy joins previously announced headliners Taylor Swift, Carly Rae Jepsen and Neon Trees.
As was announced in November, Fergie and Jenny McCarthy will host a two-hour tribute to Dick Clark beginning 8 p.m. ET. New Year’s Rockin’ Eve Celebrates Dick Clark will feature clips and remembrances, as well as an appearance by Seacrest.
Dick Clark’s New Year’s Rockin’ Eve is produced by dick clark productions, inc. Seacrest, Allen Shapiro and Orly Adelson are executive producers, with Larry Klein producing.