That blissful grin on your face? It could be described as beatific, meaning it projects a peaceful sense of joy.
If you have a beatific smile on your face, then the happiness it shows is the real thing. This word doesn’t describe phony smiles or quick grins that show a little amusement. Use beatific to describe something characterized by complete and perfect joy. It’s often used to describe a smile, but it can be used to describe anything in a state of bliss.