My daughter has been falling asleep on her tummy on my chest and then usually I lay her down in her…

My daughter has been falling asleep on her tummy on my chest and then usually I lay her down in her back once I lay her on the bed . But now she doesn't like it and wants to sleep on the bed on her tummy. Idk what to do . Do I let her lay on her tummy or is there like a special pillow I can by so she can sleep on her tummy?