David Letterman used Kirstie Alley’s recent “Dancing with the Stars” stint to get some laughs on his show, but the “fat actress” wasn’t going to let it slide. While visiting the “Late Show” last night, Kirstie called Dave out for calling her fat.

“I feel a little estranged from you,” Alley shared on the show. “I thought you loved me madly, but then you would talk about me being sort of… chub.” Dave offered an apology, admitting, “I did make jokes about the weight.”

But it wasn't about to end at that - Kirstie came prepared to read Dave’s jokes, including this zinger: “Kirstie Alley joining ‘Dancing with the Stars’… if you don’t already own one now might be the time to get a wide-screen TV.” Ouch!

“We do love you,” Letterman explained, saying he thought he had the actress’s approval for weight-related jokes. “If you were skinny, we’d tell jokes about you being skinny… well, probably not.”