The season finale of "So You Think You Can Dance" airs on Tuesday, Sept. 18 at 8/7 c.

The pop singer with the biggest hit of the summer, Carly Rae Jepsen, will perform and sing her new single "This Kiss."

Fans highly anticipate the biggest twist that was added this season for the first time since the show debuted: two winners being crowned for Season 9 of "So You Think You Can Dance." Fans were given the chance to vote who their favorite male and female dancers are.

The final four contestants are ballet dancers Eliana Girard and Chehon Wespi-Tschopp, contemporary-jazz dancer Tiffany Maher and self-taught "animation" dancer Cyrus Spencer.

The Final Four will perform individually and viewers will get a final glimpse of the Top 20 dancers of the season when they perform the judges' favorite choreographed dance routines.

"Dance" judge Mary Murphy shared her thoughts on the final four contestants with TV Guide.

When asked who might make what she calls the 'Hot Tamale" train, Muphy replied: "It usually happens after really fast numbers, usually something very Latin-y, very spicy, very hot. They have to dance it with a lot of passion and all the sexiness that somebody can bring to the table. Usually it just comes flying out of my mouth. You can't coerce it out of me."

The Season 9 finale of "So You Think You Can Dance" airs on Tuesday, 8/7c on Fox

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So you think you can dance