Marlo Thomas ticks off ‘Sherri’ staffers by ‘fat-shaming’ Shepherd on air

Marlo Thomas sent “Sherri” staffers into “mama bear mode,” we’re told, when she “fat-shamed” host Sherri Shepherd on her own show.

The “That Girl” star appeared on Shepherd’s new talk show Tuesday to promote multiple projects, including her upcoming film “Magical Christmas Village.”

But she stunned folks behind the scenes when, at the end of her segment, when she reminded Shepherd about a time their paths had crossed.

“I interviewed you for my AOL show [‘Mondays with Marlo’],” she recalled, adding, “and you used to be a big woman!”

Thomas then dug deeper by putting her hand around her body and blowing her face out in an attempt to imitate Shepherd’s old size.

“You’ve lost a lot of weight, but you’ve still got the boobies! That’s good,” she said.

Comedian Shepherd, who revealed she “lost like 35 pounds,” hopped off the seat and embraced her with laughter, but we’re told staffers didn’t find it funny at all.

“Sherri was a good sport, but people [at the show] are very protective of her,” our insider shared.

They added, “People were not happy that she fat shamed her on national TV. It was like a slap in the face.”

And we’re told they were “very vocal” about it.

Shepherd told People magazine last year that her “goal is to be living a long and active life with my son Jeffrey, who shares the same birthday as me,” after she lost 20 pounds during the COVID-19 pandemic.

“She works really hard at creating a very positive environment. Morale [at work] is everything to her, so people sort of went into mama bear mode,” the source added.

Shepherd seemed to continue to take it in stride when viewers pointed it out on Twitter. One even tweeted: “At least you know @MarloThomas keeps it real… lmao I almost fell out my chair laughing.”

“You never know what’s gonna happen on #Sherri!,” Shepherd replied with a laughing emoji.

Another viewer told her Thomas “just acted like those elders in the Black church. Just saying stuff that would offend if she were your peer, but you roll with it ’cause she’s an elder! You can say whatever you want after 84 trips around the sun.” Shepherd, again, responded with laughing emojis.

“{Just] as it came off on television, Sherri laughed off the comment,” a rep for Shepherd told us, referring us to Debmar-Mercury, the production company behind the show, for comment “about the feelings of the staff.”

Debmar-Mercury declined to comment, as did a rep for Thomas.