We expect to see fiction on the big screen, but you can't always believe what you see in celebrity magazine spreads and high-profile ads, either.
Thanks to retouching, fine lines disappear, waistlines get trimmer and hair looks fuller and shinier than ever.
But Kate Winslet wants to keep it real.
The actress is the face of Lancôme cosmetics and her contract with parent company L'Oreal stipulates that her ads remain free from changes to her appearance.
"It does feel important to me, because I do think we have a responsibility to the younger generation of women," Winslet told E! News while attending the Elle Women in Hollywood event this week.
She said "it's a hope that other people might follow suit" for the sake of those young women.