Pro dancers and celebrity contestants tell George Lopez to get on the dance floor himself or shut up!

One week after late night talk show host George Lopez ribbed Kirstie Alley's first Dancing With the Stars routine, comparing her to a dancing pig, Alley's DWTS costars are coming to her defense.

"I'd say to [Lopez], "You get out here." You think it's so easy? You sign up. Put your money where your mouth is. Leave Kirstie alone," pro dancer Mark Ballas told UsMagazine.com backstage after Monday's second performance show.

"She danced great two weeks in a row," Ballas continues. "She's got a great partner in Maks [Chmerkovskiy]. Our demographic is middle aged women who watch, and she's an idol and role model for these women!"

Alley's first routine -- the cha cha -- was slammed by Lopez, who joked that "She did a nice job. Her little hooves tapping away."

He went on, "Before the show, she went to the market and then she had some roast beef and this is her going all the way home." Lopez then played the nursery rhyme, "This Little Piggy Goes to Market" and showed a clip of a pig squealing "wheeeeeeee."

Alley's fellow DWTS competitor Wendy Williams says the star is holding up well -- even after Alley lashed out at Lopez and refused his apology. "I don't need or want ur apology," Alley tweeted March 25. "I want your kidney dude..on behalf of ur X and all the women uv insulted...give it back."

How did she do last night? You be the judge!