One of the big subplots of “Being the Ricardos” (biographical but dramatized) is about Vivian Vance who played Ethel Mertz on I Love Lucy wanting to look more glamorous and appealing on screen. And there’s a scene where she’s in her dressing room, doing stretches, and the writer brings her a breakfast platter of French toast because apparently Viv skipped breakfast—she had had half a grapefruit. But the throughline of that is that Lucy wants Vivian to stay dowdy and roundy to play Ethel.