my little belly sleeper

Oh my goodness. Lily and I have a little problem. She refuses to sleep on her back. At night, when she is on her back she only sleeps about 45 min IF she falls asleep at all. She really hates it. But... if she is on her tummy this is what I get. She LOVES it. I don't know..................... I do know she loves to sleep in this position. Look at that little face. How cute!! (thanks for the pic Blair, it's so sweet)