I definitely noticed this, and was very confused as to if it was normal or not!
When my pubic hair started coming in, it was a little harder to see, but I knew my labia majora looked more “open” and when I was little, they looked very closed and together. I also noticed my clitoris poking out, and at first didn’t know what it was.
Growing up, my mom was very open about nudity, and I remember looking at her vulva and thinking how different it looked from mine.
Now, when I shave my vulva, my labia majora look slightly closer together, similar to the way they used to before puberty. But when I open my legs, that’s another story!