Christina Aguilera gave birth to her second child, a baby girl, on Saturday, August 16 at Cedars-Sinai Medical Center in Los Angeles.

The pop singer and her fiancé Matt Rutler first revealed that they were expecting in February, only a week after revealing that they were engaged. “I’m really excited to meet our baby girl,” Christina told People earlier this year. “This has been a very easy and enjoyable pregnancy.”

On Sunday night, Aguilera shared the news, via Twitter, that her six-year-old son Max, from her previous marriage to Jordan Bratman, now had a baby sister named Summer Rain Rutler.

“So proud to welcome our beautiful daughter Summer Rain Rutler into the world,” The Voice coach tweeted.

So proud to welcome our beautiful daughter Summer Rain Rutler into the world.

— Christina Aguilera (@xtina) August 18, 2014

In July, a very pregnant Christina posed nude for V magazine. She explained that she wanted to embrace her body, even as a pregnant woman. “As a woman, I’m proud to embrace my body through all stages of life, staying fearless and confident in surrendering to the unknowns the future has in store,” she said of the photos.

Thanks to @brianbowensmith & my "glam fam" @Kristoferbuckle & @Davidbabaiihair Will cherish these photos forever! pic.twitter.com/dQBkKCdHkI

— Christina Aguilera (@xtina) August 1, 2014

Image via Twitter