My two year old daughter is still in a crib and we've been debating on the right time to switch her over to a "big girl" bed. We want to move her straight to a twin so we don't have to mess with the whole toddler bed thing. Her pediatrician has told me to keep her in the crib for as long as possible unless she is climbing out which she doesn't. I also have a toddler rail for the front of her crib that we can use to transition her to a bed. Does anyone have any thoughts on when we should move her?