A girl came back from spring break with a completely shaved head.  It was quite a striking change--she used to have long blonde hair.

Student: Hey Mrs. S--look!  *points at head*
Me: Wow!  That's a bold move!
Student: Yeah, well, I have just always had long hair and I wanted something different.
Me: You're quite brave--I'm impressed.  Didn't Natalie Portman do that?
Student: Well actually, it was a black barber.