Wednesday night is the biggest party night of the year. Whether you're staying at home or attending a party with friends, you're likely to see part of Dick Clark's Rockin' New Year's Eve.

One Direction will perform four songs from the countdown in Hollywood: 'Story of My Life,' 'What Makes You Beautiful,' 'Steal my Girl,' and 'Night Changes.'

On the opposite coast, Billboard's woman of the year, Taylor Swift, is scheduled to perform medley of her hits.

Performing in New York

Taylor Swift
Florida Georgia Line
Idina Menzel
MAGIC!

West Coast

One Direction
Charli XCX
Fergie
Meghan Trainor
Iggy Azalea
Bastille
Jason Derulo
Pentatonix
Rixton

In Tennessee from Nashville

Lady Antebellum
Gavin DeGraw

Also, Perez Hilton claims that the Billboard Hollywood Party surprise guest will be … Snoop Dogg performing with Jason Derulo!

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