I have a Facebook friend (former co-worker) who does female bodybuilding. When it’s competition time, she goes on as close to an all-protein diet as is possible (basically, she lives on egg whites - yes, cooked - and skinless chicken breast) and also uses spray-tan and gets professional makeup. She does not look like the same person!
(This was after losing more than 150 pounds, which makes me wonder if there’s some disordered eating in there, but she does look great even without all the dolling up. She does have some visible loose skin, but so do some women who have had full-term pregnancies.)