Grab a quick shower

The twins turn around to go change. I can't help but watch Kate's cute little butt, until she turns out of sight to head back down to the basement. She's really filling out to become an attractive young lady.

I decide now might be a good time to shower before everyone else is up and the shower's too busy.

It's surprisingly quiet upstairs for such a full house. However, I see that both bathrooms doors are mostly closed but sightly ajar. I listen and don't hear anything from either one. I don't think either is occupied. Should I try the girls' bathroom or the twins' bathroom?