Scissor Using Hair Chopping Baby

Scissors are hand-operated shearing instruments. They consist of a pair of metal blades pivoted so that the sharpened edges slide against each other when the handles opposite to the pivot are closed. Scissors are used for cutting various thin materials, such as paper, cardboard, metal foil, thin plastic, cloth, rope, and wire. Scissors can also be used to cut HAIR and food.  

I as an adult know that scissors can be used to cut many things. I just can't figure out how a 4 yr old would know that she can use scissors to cut her hair? When I was a kid, I think I touched my first pair of scissors when I was like 5 or 6 and I sure enough did not know that I could my hair with it.

  Well I'd like to introduce to you, my 4 year old niece who has discovered her passion for cutting hair, her own hair that is.  

She chopped up all this hair a few days ago. 

My Mom found the evidence in the trash bin.
And of course when we asked her who cut her hair, she said she didn't do it. 

Here she is.

 I asked her if the kids at school made fun of her, she said no Auntie, the kids actually liked my hair. 

Now that I think of it, I believe my sister (her mom) cut her own hair when she was a kid. Like Mother/Like Daughter.

Have any of you Mommy's had your toddlers and not so toddlers become their very own barbers and/or hair stylists?
Or is my niece the only one who's chopped off their hair?