DD 20mo was towards the late end of hitting her milestones, laid back I think 
She started walking at 18 mo so has been walking for a good couple of months now, but ive noticed the past few weeks she has started to walk on her tip toes, both bare foot and wearing shoes. I didnt take much notice of it at first but she has started to do it increasing more often, to the point where shes always on her tip toes.
Is this something I should try to discourage? Or is it a normal toddler phase? She doesnt seem to be in any pain which might be causing her to do it and her shoes fit her correctly, just worried about any damage she may be doing to her feet.