Duck, Duck, Goose is my way of joking about the whole “threefold revelation" thing. Cersei is still a good looking woman, but youth is no longer on her side, and she’s drinking and eating heavily which will take its toll.
Everything I’ve ever read about Arianne says she’s incredibly beautiful. She’s not Twiggy, but according to Ser Mix-A-Lot, the Lion-el of Richie, and lady Meghan of House Trainor, her body type is much to be admired.