The singer posted this adorable picture of Summer Rain on Instagram today but is not showing her face.
With a "little diva" diaper, Christina captions the pic, "Watch out...another one's getting ready to conquer the world! #driven #diva2."
Summer is the first child for Rutler, and Christina has a 7-year-old son named Max from her previous marriage to Jordan Bratman.
Check out the video below to see more celebrity babies we're expecting to see this year!