The season 3 finale of "The Voice" will air live Dec. 18 for a two-hour special. Millions of people will tune in to learn which of the final three contestants will win the grand prize of $100,00 and a recording contract with Universal Records.

Will it be Scottish rocker Terry McDermott, soul singer Nicholas David or rock-pop singer Cassadee Pope?

The finale for the NBC's hit singing competition will offer performances by some of today's biggest stars including Rihanna, The Killers and Season 1 "American Idol" winner Kelly Clarkson.

Here is a list of highlights to expect from Tuesday's show:

-Rihanna will perform her current hit song "Diamonds."

-Bruno Mars will debut his song "When I Was Your Man" from his sophomore album "Unorthodox Jukebox."

-The recently engaged Clarkson will perform her latest single from her Greatest Hits album, "Catch My Breath."

-The Killers will sing their hit song "Runaways."

-Cassadee Pope will perform a duet with girl-pop-punk idol, Avril Lavigne. Pope had already performed two of Lavigne's songs during season 3, "I'm With You" and "My Happy Ending."

-McDermott will sing with Grammy-winning guitar legend Peter Frampton. 

-David will sing with Grammy-winning R&B icon Smokey Robinson

-The season 3 winner will be revealed! 

The season three finale of "The Voice" will air live on Tuesday, Dec. 18, at 9 p.m. on NBC.

Watch the free live stream of the "The Voice" season 3 live finale here 

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