She snuggles next to me, level with my boobies and I sleep with my arm around her.
I do the same with my DS, he is snuggled next to me, and I swap sides when I feed so he could end up on either side.

He wears a onesie, but his hands have been getting very cold during the night so I have started to put mittens on him. I have the blanket over my shoulders, then diagonally across him so they are not covering his face.