That's the name of Christina's new daughter, whom she and fiancé Matt Rutler welcomed into the world on Saturday, August 16, in Los Angeles. Her rep confirmed the happy announcement to People.
The 33-year-old also tweeted her baby news, writing, "So proud to welcome our beautiful daughter Summer Rain Rutler into the world."
This is the happy couple's first child together — Xtina is also mom to 6-year-old son Max Liron, from her marriage to Jordan Bratman.
Summer Rain is a byproduct of Burlesque, if you can believe it. Christina met her beau on the set of the critically-panned 2010 movie — she was the movie star, and he was the production assistant. (Talk about a Hollywood meet-cute!)
In the intervening months, Christina made the most of her baby-bump days, even posing nude for V magazine.
And now, the "Beautiful" singer can enjoy plenty of time with her new little girl — Gwen Stefani is taking her spinning chair on The Voice for Season 7, granting this new mama a helluva maternity leave.
Congrats to Mom and Dad!