[08:10] Derek Hough poses with his outstanding choreography award for 'Dancing with the Stars'
Derek Hough poses with his outstanding choreography award for "Dancing with the Stars" that he won along with Julianne Hough and Tessandra Chavez, backstage at the 2015 Creative Arts Emmy Awards in Los Angeles, California September 12, 2015. Reuters/Danny Moloshok

As “Dancing With The Stars” rolls into Week 6 of Season 21, the nine remaining pairs will be celebrating “Famous Dances” night on Monday.

The couples will perform iconic dance routines from movies and music videos. One couple will be eliminated at the end of the night, based on the lowest combined judges’ scores and viewer’s votes from the “Switch Up” week and “Most Memorable Year” performances.

The three judges--Julianne Hough, Carrie Ann Inaba and Bruno Tonioli will be joined by guest judge Olivia Newton-John on the panel to watch the couples re-create iconic dance routines, ABC reported. The legendary Australian actress, singer and songwriter will witness how the dancing duos re-create the magic of the iconic dances.

In another major development for the dance reality show, Leah Remini will co-host the show with Tom Bergeron as guest host. Erin Andrews is on a short break from DWTS to cover the World Series on Fox as its sideline reporter. She will return to the show once the World Series is over, E Online reported.

The American actress and comedienne Remini had competed in Season 17 of the show and had partnered with Tony Dovolani.

Let us see who is dancing what in Week 6 (Spoiler Alert):

Alek Skarlatos & Lindsay Arnold – “Jailhouse Rock” from Jailhouse Rock

Alexa Pena Vega & Mark Ballas – “I’m A Slave 4 U” by Britney Spears

Andy Grammer & Allison Holker – “Good Morning” from Singing In The Rain

Bindi Irwin & Derek Hough – “(I’ve Had) The Time of My Life” from Dirty Dancing

Carlos Pena Vega & Witney Carson – “Pony” from Magic Mike

Hayes Grier & Emma Slater – “You’re The One That I Want” from Grease

Nick Carter & Sharna Burgess – “You Should Be Dancing” from Saturday Night Fever

Paula Deen & Louis van Amstel – “Vogue” by Madonna

Tamar Braxton & Valentin Chmerkovskiy – “Rhythm Nation” by Janet Jackson

Meanwhile in Week 5 of DWTS Season 21, all the contestants celebrated the “Switch-Up Week” theme last Monday. The nine remaining celebrities were paired with different pro partners.

Alexa PenaVega and her stand-in partner Derek Hough walked away with the highest score of the night with 40 points. The duo performed a tango, which landed Pena Vega her first 10 points of the season.

Following close behind was her husband -- Carlos PenaVega. Paired with Lindsay Arnold, he earned 39 points for his Quickstep routine. Bindi Irwin was on the top three as she earned her second consecutive 10 points. The fan favourite danced the cha-cha with Valentin Chmerkovskiy.

“Dancing With The Stars” Season 21 airs at 8 p.m. on ABC on Monday and 9 p.m. on Tuesday.

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