Julianne Moore's kids didn't know she was famous

Julianne Moore's children had no idea she was so famous.

The 'Still Alice' star may have an impressive 79 blockbusters under her belt as well as a collection of awards to her name but she has admitted Caleb, 18, and Liv, 14, whom she has with her husband Bart Freundlich, were initially shocked - up until a few years ago - by how successful her career is.

Speaking to NET-A-PORTER.com's digital magazine The Edit, she said: "A couple of years ago I got an award, and they did one of those film clubs. My kids came and they had seen one or two of my movies, but they hadn't seen them all, and they were shocked! Shocked! First of all, they were shocked that I had done so many movies, and then, that I seemed to be doing these outrageous things."

And, after 29 years in the nitty-gritty industry, the 55-year-old actress shows no signs of slowing own and believes her passion for acting gets stronger the older she gets.

She explained: "I like [acting] more the older I get, and that has surprised me, because I've always been waiting for the other shoe to drop, the day I'll be like, 'I don't want to do that anymore!' But instead, it's more compelling to me. I like the act of figuring it out, I like learning things ... Like right now, I'm playing a character who is deaf, so I'm learning about deaf culture and learning some very rudimentary sign language, and that's exciting to me."

But, although the flame-haired beauty is wrapped up in acting, Julianne still occasionally finds herself stopping to think about what she will do if her career comes to a halt.

She said: "I think about that. I think about that a lot because it's not a guarantee, my job. It could happen, if suddenly people stopped hiring me. What would I do? I don't know."