Christina Aguilera welcomes a baby girl

Christina Aguilera had her baby!

The Grammy award-winning "You Are Beautiful" singer welcomed a baby girl with her fiancé, film producer Matt Rutler. And, as Christina just announced on Twitter, the baby's name is...Summer Rain. Seasonal!

Baby Summer was born Saturday, August 17, via C-section. According to our friends at Hello! Canada, Christina, 33, checked in at around 8 a.m. to Los Angeles's Cedars-Sinai Medical Center (the birthplace of Kim Kardashian's North, and Jessica Simpson's Ace and Maxwell, to name a few of many celebrity babies born there) and delivered her baby girl in a "private, deluxe suite."

Read more: Hollywood's newest babies 2013>

Throughout her pregnancy, Christina was active on social media—sharing fun...and provocative pics with fans.

"Baby girl getting first listen to what mama's been creating in the studio," Christina tweeted along with this photo, on August 11...

She also tweeted the following much-buzzed-about glam shot on August 1, captioning it, "Thanks to @brianbowensmith & my 'glam fam' @Kristoferbuckle & @Davidbabaiihair <3 Will cherish these photos forever!"

Christina and Matt met on the set of her movie Burlesque (he was a production assistant, and she was the leading lady, of course), and they've been together for three years. This is the first child for Christina and Matt—the second for Christina, who's also mom to six-year-old Max, from her former marriage to Jordan Bratman.

Read more: Celebrity parents: Love at first take>

Congrats to the family!

Off to update our Who's Pregnant in Hollywood gallery. See you there!

Love! xo Haley-O

Celebrity Candy: Follow along as Haley Overland delivers the latest scoop on celebrity families — plus sweet celeb interviews! You can’t have too much of this candy, so check back often.