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		| Originally posted by Munchkin03 As evidenced in my quote, I am quite familiar with how she became Lady. But you said, "I'm fairly certain that, in order to be a Queen, a woman has to be born a Princess."
 
 I'm "fairly certain" that you were wrong.
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 I would have answered earlier, but I am at work.
According to Burke's Peerage, Queen Elizabeth (the Queen Mother) was a Queen Consort:
"The Queen Mother's remarkable life spanned over a century, a period of immense change. Having married The Duke of York (Prince Albert Frederick Arthur George, later King George VI), The King and Queen's second son on the 26th April 1923 in Westminster Abbey, she found herself Queen Consort on the abdication of King Edward VIII in 1936."
Source
That's just one case that I've had the time to explore.  I'll be happy to give you the benefit of the doubt that we were talking about different definitions of "Queen".
Princess Michael of Kent, not born a royal, has to use her husband's name, and is not Princess Christina.  Sarah Ferguson was granted the use of Duchess of York, and could never have been styled Princess Andrew, for the same reason.