They are pretty strict.
I do know a girl who was told a definite no, being just below 160cm, but (as I understand it) challenged them on the grounds she had performed the role of a flight attendant without issue at 2 other airlines, in aircraft just as big. She got a job in the end. Was all very hush hush though - dont know if her partner being a QF S/O had anything to do with it.