This is an alternate future version of the Simpson girls. In this universe, during the episode "Large Marge," Marge likes her breast implants so much that she decides to keep them. Not only keep them, but undergoes additional surgeries to feed on the positive attention she gets from her looks. After additional boob jobs, butt lifts, face lifts, and a nose job, Marge has become quite the sexy, superficial woman. This winds up having an effect on how Lisa and Maggie are raised to adulthood. Learning to value appearances, both grow into a pair of hotties, and Maggie, being exposed to her mother this way since her infancy has also become quite the bimbo, having never bothered with education as Lisa once did before puberty made her conscious of boys and her looks.