As anyone who's ever read a fashion magazine would know, a celebrity's beauty routine is big business.
It offers an open invitation into her bathroom as she reveals her favourite products -- leaving readers to hang on every word (or should that be product name?) -- in the hope that if they copy it they might just resemble the cover girl in question.
Just ask Vogue who recently enlisted Margot Robbie to front their cover and do just that, with a fabulously funny and self-deprecating twist.
The 25-year-old actress becomes a very convincing female Patrick Bateman in a parody of "American Psycho" which sees Robbie take us through her "psychotically perfect" beauty routine.
"I live in a charming little five-bedroom in Beachwood Canyon. My name is Margot Robbie. I'm 25 years old," Robbie narrates as she takes a morning pee.
As she opens her fridge we see Vegemite as she grabs two cold teaspoons to place over her eyes to relieve the puffiness.
"I believe in taking care of myself. Eat a balanced diet and a rigorous exercise routine."
Of course, she loves to mediate. And work on her core. Even though she was "born with a six-pack."
As she steps into the shower, she tells us "I can't remember the last time I washed my hair. It basically cleans itself now."
And the secret to her "third trimester glow without the cravings?" Placenta-infused facial toner. Duh.
Seriously, this woman can do no wrong.