I decided to let Kate start crawling up the stairs on her own. For one, I'm getting so big that it's hard to carry her up. My other thought was that it won't be long before I'll have a newborn to carry too, so this one had better start practicing how to do it on her own! We have gates at the top and bottom for safety, and I still have to carry her down the stairs. It's bittersweet, though, to let my "baby" be a big girl!