L.A.
Hi Danielle,
I have 4 1/2 year old twin girls. They have been in toddler beds since they were able to climb out of their cribs. Think it was around 2 1/2 but don't remember. But what I do remember is wishing they were still in cribs. Bed time became very difficult once they could easily get out of bed. It coincided with potty training also creating an excuse to get up, "mommy I have to go potty." If you have the room I would strongly suggest twin beds and skip the toddler beds. We used toddler bed because of space restrictions but I think I would have preferred a twin trundle bed - I think we would have all been more comfortable. Good luck
L.