Julianne Moore "hates" 1950s style.
The 'Kids Are Alright' star prefers the style of the 1970s because her body shape does not fit into the classic 50s look.
She said: "I don't like 50s clothes. I wear them in movies, or they appear on the runway, ladylike waists and all that. I'm like, 'No!'
"I hate them on me because I have no waist. I go straight up and down.
"I remember a Life magazine photo of a girl with long hair, in jeans, no make-up, hair very loose and I thought she was the most beautiful girl in the world. Very 70s. That has stayed with me my entire life."
The 50-year-old actress is famed for her pale skin and natural beauty, and she believes staying out of the sun has helped her age well.
She told InStyle magazine: "I say this to every young person I know, stay out of the sun! I have very fair skin and it could have been super damaged.
"I was a kid before SPF was invented. But my family never went to the beach until after three o'clock and only stayed for 45 minutes. Now I always wear sunscreen and I walk on the shady side of the street."