I grew my white hair long some years ago having had it long for years when it was dark, and used to wear it up for swimming and special 'dos' but after some time decided to go shorter. It has now found its right level, which is just about on the chin. Long hair didn't do much for me (after looking at photos
) and very short hair made me look fat, so I am quite happy as I am now. I think it depends on the shape of face, age of face, height of person and colouring. Everyone is different..... If it feels right, go for it!