Real age 70

Real age 69. I know it because i have followed Julie's careeer here in Britain and she was born in 1941. She is 69 now.

Just curious, did you actually ask her? Also, do you know where I can write to her?

Nope, but she has said it many times, and it was said a lot of times in a lot of tv shows and magazines and articles about her.

As you didn't answer my 2nd question ["Also, do you know where I can write to her?"] does that mean no?

I know where she lives, But try here:
Julie Christie, fan mail adress.Arg. 4, great portland street. London, w1w 8 PA.UK.

Or Here: Julie Christie. 23 Linden Gardens. London. W2 4HD.England.

and she is still a beautiful woman.

I would suggest more like 1931. I'm watching 'Darling' (1965) right now and there is NO WAY that she was only 24. She easily looks every bit of 34 in this movie. Being born in India, she could have probably said she was born any year and gotten away with it.

So my next thought was that if she was 20, there was no way she could play a girl of 10. So I looked for her first movie. She would have been 30 and could have reasonably played a girl of 20.

She is definitely 10 years older than what she claims.

So, by your impeccable logic, that would have made her 44 when she made "Shampoo", 47 when she made "Heaven Can Wait" and 52 when she made "Heat and Dust"? Wow, she was incredibly well preserved, if that's the case!
The easiest way to prove her age would be to look up the records of the private school she attended when she went to England from India, see what year she began and her age at the time.