gotta love the sleeping bag and sleep suits been a life saver for me DD kicked the covers off as soon as she could move.
a tip, if it is really cold buy your sleep suit a little larger than you probably need and layer using a nice snuggly pair of flanelette jamies underneath DD loves it!!!
We have just progressed to putting a small quilt over her and for the most part she stays underneath it but if not it doesn't matter cause she's all covered anyway.