'So You Think You Can Dance': Zack Everhart, Jessica Richens, Valerie Rockey, Ricky Ubeda named top four

Casey Askew and Jacque LeWarne are eliminated  

Zack Everhart, Jessica Richens, Valerie Rockey and Ricky Ubeda are the top four finalists on "So You Think You Can Dance," and move one step closer to becoming America's favorite dancer. After a dramatic vote on Wednesday's show, Casey Askew and Jacque LeWarne were eliminated. Also, Rixton performed their hit single, "Me and My Broken Heart."

Next Wednesday, Aug. 27 (8 p.m.), on FOX, the top four will be paired up with all-star partners to perform for America's votes, leading up to the highly-anticipated season finale airing Wednesday, Sept. 3 (8 p.m.).

On next week's show, returning guest judge Jesse Tyler Ferguson ("Modern Family") will join judges Nigel Lythgoe and Mary Murphy. The all-stars include Aaron Turner (season 10), Kathryn McCormick (season six) and Robert Roldan (season seven). Also, tune in for a special appearance from Jason Mraz, who will perform his hit single, "Love Someone," from his latest album, "Yes!" 

Fans can visit the official "So You Think You Can Dance" site at www.fox.com/dance to view exclusive videos and photos. "Like" "So You Think You Can Dance" on Facebook at facebook.com/SoYouThinkYouCanDance. Follow the series on Twitter @DANCEonFOX and join the discussion using #sytycd. Follow host Cat Deeley at @catdeeley, and follow the judges Lythgoe@dizzyfeet and Murphy @hottamaletrain.