DANCING WITH THE STARS Showdown: Season 13's Last Performance Show!

This is it - the final performance night for the stars to accumulate the scores that will put one on top and send the other two home empty-handed in the competition. They'll dance two dances tonight - a routine and a freestyle - and one more tomorrow.

Judges' Scores:
Rob Kardashian and Cheryl: 57
J.R. Martinez and Karina: 54
Ricki Lake and Derek: 54

Ricki Lake and Derek kick things off dancing to Chris Brown's "Yeah 3x." Ricki's definitely been one of the stronger competitors (and earned the highest total judges' scores this season), and although this performance comes across a little bit choppy, overall it's a strong showing. "There's a difference between performing a dance and living a dance, and tonight you were definitely living the dance!" Carrie Ann says. They receive 27 points.

Rob Kardashian and Cheryl dance a waltz to "It is You" (a song featured in 2001's Shrek). Rob's reality star sisters are shown in the audience, and he gives a good effort despite some questionable footwork. "You just messed up some of the footwork - it happens, but it was very very good!" Bruno tells him. The two earn three nines for 27 points.

J.R. Martinez is cleared to dance after last week's ankle injury, but by dancing separately from partner Karina for much of the dance, he loses his timing a little bit. "That wasn't that good. Your enthusiasm got the better of you, really." Len says, and Bruno adds that "Your intensity is right on the money." The scores range from seven (Len) to nine (Bruno) for a total of 24 points.

Ricki and Derek seem much more comfortable in their freestyle than in the first dance this evening. In spite of Ricki's fear of lifts - and she makes it very clear that she's terrified - she works it out and once again earns all nines for another 27 points.

A dapper Rob and flapper Cheryl plan to start their freestyle out slowly and in order to wow the judges since Rob has more trouble with fast footwork. It works: "To get a ten, you have to blow us away," Carrie Ann says. "Consider me blown away!" The other judges are equally impressed, because Rob earns a perfect score for his very last dance of the season.

J.R. and partner Karina decide to do a Latin routine, but Karina's nerves seem to be getting the best of her during the rehearsal tape. They need to bring their A-game to gain on the other two celebrities, and luckily for them both are able to do the lifts without a hitch. "That's the way to come back!" Carrie Ann cheers. J.R. and Karina receive a perfect score, putting them at equal footing with Ricki and Derek.

Tune in tomorrow for one last performance from the celebrities - and of course to find out who'll earn this season's Mirror Ball Trophy!

Viewers may cast their votes for their favorite teams via phone on Monday night during and up to 30 minutes after the "Dancing with the Stars" performance shows. Wireless customers with AT&T may also text message their votes by texting the word "VOTE" to the number that corresponds to the team they want to support (message and data rates may apply). Viewers may also vote online at www.abc.com starting from the opening of each episode on the East Coast, until 8:00 a.m., PT the following day. Fans may cast the maximum limit of votes for each voting method.