Advice needed as I'm wanting to bring my GF of 2.5 years to the UK

[joebloggs]

I have just read on a website that since 28th November 2008 the requirement for a Fiancee Visa is that she has to be at least aged 21. Is this true?

yes if she is under 21, she will be refused, it has been law since last year

how old is she ?