Slumber Party? Already?

Liza just got invited to a friend's birthday party. The girls were in the same class, but on completely opposite ends of the spectrum. While Liza was the oldest in her class, turning 6 just when school started, Savhanna was the youngest, turning 6 this weekend. Although, if you looked at Savhanna, the way she behaves, speaks and plays, you don't really notice the age difference. But she is a tiny little bug. Pretty too. I have to say, I admire this girl's parents. They are both firefighters for AF, and very busy. Savhanna is having a slumber party. Now that was a bridge I knew I would be crossing soon, but I thought I could see it just on the horizon. So is this as crazy as I think it is? 2 very busy parents, both highly qualified if there was an accident, but throwing a slumber party for a 6 year old? I don't remember how old I was when I had my first sleepover. Ahh, she's excited about it. I am going to let her go. Now I just hope she doesn't think she gets to start having them. I thought 8 or 9 would be good. Maybe 1st grade isn't as bad as I think it is. Then again, maybe it is.