My granddaughter, aged 2.4, has indeed clicked that there's a difference, and she does think it's down to clothes and pink and hair.
I meant they generally haven't noticed that boys have a penis and girls have a vagina which was what the person in question claimed to have been discussing at 2.
At most, they notice that boys have a penis and girls don't - but only if they have seen other naked 2 year olds. How would they know about a girls internal anatomy and the correct terminology for such unless they were told? At that age the diference is only superficial stereotypes and why shouldn't a boy like pink sparkly stuff?
My son was fascinated by pink and sparkly when he was 2. He liked to go into Boots to play with the make up and often wore nail polish and had his hair in bunches for nursery.
He was at least 3 before he started rejecting things because they were 'for girls' and, even then, he didnt know that boys have a penis and girls have a vagina!
But she is not at all "girly" in temperament -- whatever that means. She is assertive, and very adventurous. She is not afraid of anything. The other day we went to a playpark that had two sections, one for toddlers and one for bigger kids.
She immediately headed for the big kids area and wanted to go down the long, steep slides and even a chute, quite high up, which, when you looked in, was all dark and spooky. Mum and I were trying to convince her that she's too small -- but no, she had to go, again and again, up the stairs and down the chute. There was a climbing section with a climbing frame made of ropes, quite high, and a lot of 7-10 year old boys were swarming over it. She wanted to go, but her mum said no, that's for big boys (emphasis on big, not boys) but she still wanted to go and so we let her, though she could not climb very high. (She was the only girl there so I suppose it means she is really a boy?) She also insisted on going on the zip-line (being held all the time, of course).
And how will you feel if someone decides at some point that this must mean your granddaughter is actually a boy?
Why could the bigger climbing frame not be for big girls too?