Episode 25 of “The X Factor USA” Season 3 marks the grand finale of Fox’s reality singing competition. Three acts have remained on the first of the two-day finale scheduled from Dec. 18 to 19, 2013.

“X Factor USA” Day 1 Finale: Dec. 18
The Top 3 finalists will sing for America’s vote on Wednesday, Dec. 18. The three finalist acts will sing favorite performance, dubbed as “song of the season.” The remaining hopefuls will show America their “X Factor,” will also take the spotlight for “celebrity duets,” before hitting the stage for the winner’s song, popularly called as the “$1 million song.”

Now that Demi Lovato had already taken the stage on November 28, 2013 for the much-talked about “Thanksgiving” performance on the “X Factor,” her fellow mentors Kelly Rowland and Paulina Rubio will perform as musical guests for the evening.

Both Kelly and Paulina are first-time judges on the Fox reality singing competition. Kelly however, is not new to the post as she had undertaken the same job for the UK edition of “The X Factor.” Paulina for her part is first-time judge to the “X Factor,” but her popularity among Latino fans was considered for Simon’s decision to take her on board.

Kelly is a former member of Destiny’s Child from 1992 to 2006. Some of her hit songs include “When Love Takes Over,” “Dirty Laundry,” “Work” and “Motivation.” Paulina for her part is a 42-year old, Mexican singer known for her hit songs including, “Boys Will be Boys,” “Me Gustas Tanto,” and “Ananda.”

“X Factor USA” Day 2 Finale: Dec. 19
America will name who has the “X Factor,” among the Top 3 finalists on the third season of the Fox’s reality singing competition. The world will know Thursday who among Alex Kinsey & Sierra Deaton (Simon Cowell’s Group act); Jeff Gutt (Kelly Rowland’s Over 25s Act) and Carlito Olivero (Paulina Rubio’s Boy’s Act) has the “X Factor,” to win $1 million dollars prize and a recording contract.

The top finalists will sing on results show on Episode 26 of the third season of the “X Factor USA,” on Thursday and they will sing the top Christmas songs of the year.

Four artists will be the grand finale’s celebrity guests.

As the top 3 finalists wait for their names to be announced with the “X Factor,” America and the whole world will enjoy the top performances by the hottest celebrities in town.

Leona Lewis will perform live with “One More Sleep,” One Direction with “Midnight Memories,” Leah Michelle, “Cannonball,” and Mary J. Blige. No details of Blige’s song on the last result night on the “X Factor” USA.

The "X Factor USA" grand finale airs on Fox, Wednesday and Thursday, Dec. 18-19, 2013, 8-10pm ET.

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