I asked my midwife about this today - she said there's too much variance for it to be a thing. Too many different factors affecting when you show for it to be attributed to height.
My mum is 5ft 3in and didn't show with any of her 4 pregnancies until about 6 months. In fact, she was in having gall bladder surgery when 5 months pregnant with my brother and no one, including her, had any idea she was pregnant!