'Dancing With the Stars' Cast: What Hollywood is Saying

Following months of speculation, the cast member of Dancing With the Stars Season 13 was revealed on Monday, Aug. 29. As usual, the new crop of contenders sparked strong reactions among fans, including several Hollywood stars.

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The Kardashians took to Twitter in full support of baby brother Rob Kardashian, who will follow in big sister Kim’s footsteps.

“So excited my bro @RobKardashian is gonna be on Dancing With the Stars! Good luck Robbie! I just hope u do better than me...not too hard! LOL,” Kim joked about her ill-fated Season 7 stint, in which she was booted after just three episodes.

“My bro @RobKardashian is doing Dancing With the Stars!” added eldest sister Kourtney. “So excited to see his butt in some spandex shaking all over the dance floor! TEAM ROB!”

“My baby boy @RobKardashian is going to be on Dancing With the Stars!! Woohoo love you Rob! I'm so proud of you xo,” wrote Kardashian matriarch, Kris Jenner.

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“I am so excited for my baby brother! I can't wait to see him dance on DWTS. Shake your money maker @RobKardashian,” said sister Khloe.

Show host Tom Bergeron made a joke about LA Laker, Ron Artest, who will put on his dancing shoes during the NBA lockout.

“How best to introduce Ron Artest if he changes his name?”  he pondered. "’I believe you've met Metta?’ ‘Now, dancing the quickstep, World Peace.’ #DWTS”

Fellow contestant Nancy Grace, whose casting has been met with mixed reactions, wrote, “Thank you for all the #DWTS support today! I feel so honored & special. And I just want to say, this man, SWEET as pie!” linking to a backstage photo of she and Artest.

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Chelsea Lately’s Heather McDonald, who has been vocal about her own desire to participate in the reality show, said, “Chaz Bono & Nancy Grace on DWTS makes me excited to watch.” Fellow Lately comedian Josh Wolf admitted, “I'm torn. I hate DWTS. Hate, hate, hate. But...Hope Solo in those little outfits? Well played ABC. Well played.”

Former contestant Kirstie Alley tweeted, “Love and Happiness to all the new dancers on DWTS...Here's my only advice to you.” She then linked to a video of Leonard Cohen performing “Dance Me to the End of Love.”

“I can't wait to watch (and vote) for my friend @RickiLake on #dwts !! She is gonna rock it :) congrats lady!!” gushed Rules of Engagement actress Sara Rue.

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Trista Sutter, who appeared on the inaugural season of DWTS, tweeted her shock during the Monday announcement.

“MOST shocked about David Arquette!!!!” she posted initially, before adding, “Talk about BEAUTY...Hope Solo and George Clooney's ex...WOW!!!!!!!!!!!!!!!!!!!!!!!!”

Continuing to express her surprise, she tweeted, “Chaz BONO?!!!! WOW!” and then “Nancy GRACE?!!!!!! THAT is a shocker!!!”

The professional dancers paired with each contestant will be announced on Good Morning America Wednesday, Aug. 31. Dancing With the Stars returns for this thirteenth season on Sept. 19 on ABC.