The couple announced they were expecting in October.
Congratulations to Ciara!
The "Goodies" singer welcomed her first child with husband Russell Wilson on Friday.
WATCH: Ciara Shows Off Her Baby Bump in Calvin Klein Underwear -- See the Sexy Snap!
Ciara took to Instagram to announce that she had given birth to a baby girl, Sienna Princess Wilson.
"Dear Sienna Princess Wilson. No matter how big the wave, we will always be your calm in the storm. We love you," the singer wrote alongside a photo of herself lounging by the ocean. "Love, Mommy and Daddy. 7:03 p.m., 7 lbs. 13 oz."
Ciara, who already shares 2-year-old son Future Zahir with her ex-fiance, rapper Future, announced that she and Wilson -- who tied the knot last July -- were expecting on her 31st birthday in October.
"On this special Birthday I received an abundance of love from friends and family.. and I'm excited to Finally share one of the Greatest Gifts of All that God could give," she wrong alongside a black-and-white shot of Wilson cradling her tiny baby bump, while the Seattle Seahawks quarterback captioned the same pic, "The Greatest Blessing of All. Forever Grateful. #BabyWilsonOnTheWay."
WATCH: Pregnant Ciara Is 'Doing Well' Following Car Crash in Los Angeles, Rep Says
The singer continued to flaunt her pregnancy over the next few months, and told ET in November that she and Wilson had picked out a baby name -- and that little Future was already embracing becoming a big brother.
"He rubs my belly and he says, 'Hi baby. I love you, baby,' ... and then he puts my shirt down and says, 'Bye, bye baby.' So, that's his own thing," she gushed.
"He sees a baby walking, smaller than him and walking -- it doesn't matter, it's a baby. So, he goes, 'baby' and he looks at me and he goes, 'Mama, baby' -- and he tries to pull my sweatshirt up,'" she beamed.
WATCH: Ciara Reveals Why She and Russell Wilson Abstained From Sex Before Getting Married
See more in the video below.