Oh, for a pair of pants

My eighteen-month-old has gotten to the stage that I've heard about but never had the "pleasure" of experiencing for myself: she has discovered that she'd rather be free than fettered and has found great joy in taking off her pants and diaper and then running through the house, giggling, egged on, I'm sure, by her brother, who screams and tattles on her.  It's happened three times so far today, and a couple of days ago, she undressed while in her crib, then fell asleep and woke up screaming and lying in a puddle. I don't know. Maybe it's time to get the duct tape out?