The Mopsey Sisters were characters who served as temporary replacements for The Warblettes for a one year period from 1978 to 1979 on the Portrait Stage at Pizza Time Theatre.

The Mopsey Sisters were three mop-like girls who had sticks for bodies and mops for their hair. They had animatronic eyes and mouths, and they sang backup vocals. They ended up getting retired and were replaced by The Warblettes once again in 1979 after only a year of use.