It's A Britney Vs. Gaga Vegas Showdown This New Year's Eve

Britney Spears ain’t the only pop star headlining the Las Vegas strip this New Year’s Eve!

Lady Gaga’s performing with Tony Bennett at the Cosmopolitan hotel.

Gaga said of it:

“I can’t wait to kick off 2015 `cheek to cheek’ with the legendary Mr. Tony Bennett. New Year’s celebrations are about cherishing family, friendship, and the future — three things this man has taught me much about.”

Tickets for the show go on sale Friday.

In the mean time, you may purchase tickets to Britney’s Piece Of Me here.

Who’s coming?