United Kingdom, Feb. 6 -- Kaley Cuoco has weighed in on the Ashley Tisdale toxic mom-group drama.

After Ashley called out her former mom-group for acting like "mean girls", Kaley - who has daughter Matilda, two, with fiance, Tom Pelphrey - shared her thoughts.

Speaking on Watch What Happens Live, she said: "I mean, if you don't like being part of a group, just leave, baby."

Host Andy Cohen replied: "Right!" and Kaley said: "I don't think we have to talk about it, to which Cohen, 57, added "Like, write an essay about it."

Ashley - who has Jupiter, four, and Emerson, 16 months, with husband Christopher French - first opened up about her experiences with the mom group in a post on her blog in which she declared: "Here's the thing nobody ...