S03-E14 of "The Golden Girls", co-written by series mainstay Terry Grossman and Kathy Speer, is so badly misconceived from the get-go that I can think of no way to fix the problem except for throwing out this script altogether. Blanche's long-estranged daughter Rebecca--a real beauty who once worked as a professional model--comes to visit. She's still a pretty girl, only now she's vastly overweight, causing Sophia to go into a barrage of 'funny' fat jokes (which the studio audience eats up, no pun intended). Blanche works hard avoiding the issue until Rebecca introduces the ladies to her fiancé, who also makes fat jokes (and this time the audience doesn't laugh). There's such a double standard at work here that it makes one wince. In the end, Blanche talks her daughter out of marrying the jerk and to accept herself as she is--although, ironically, when the character of Rebecca returns in later episodes, she is played by a different, much thinner actress.
Review of Blanche's Little Girl
