My eldest was identical - gender neutral toys when she was small, a yellow-painted bedroom, no particular bias for or against pink (she had some pink clothes, b

My eldest was identical - gender neutral toys when she was small, a yellow-painted bedroom, no particular bias for or against pink (she had some pink clothes, but not all), then... Bam! Pink! She turned 4 or 5 (I forget) and suddenly her life was a pink tinged fantasy of Disney Princesses, Barbie etc. No idea why.