It never fails...each and every night when I go into the girl's room to check on them they are sleeping like this! They are always sleeping at the edge of their crib closest to their sister. Never once have I checked on them where they have been on any other part of their crib. It is amazing the natural bond between twins. It seems that they take extreme comfort in each other's presence when they are awake or sleeping. This observation makes me wonder when we switch to toddler beds if they will end up in each other's bed... time will tell.