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OTRC: Kelly Clarkson gives birth to baby girl River Rose Blackstock

Kelly Clarkson is a mom!

The Grammy winner announced the arrival of her daughter, named River Rose Blackstock, Saturday on Twitter.

"Our baby girl River Rose Blackstock arrived on June 12! Thank you everyone for all of your well wishes! Brandon and I are on cloud 9!!" Clarkson tweeted.

This is the singer's first child with her husband, Brandon Blackstock. The two tied the knot in a private ceremony on Oct. 20, 2013.

Blackstock, a music manager, has two children, a daughter and son, from a previous marriage.

The 32-year-old "American Idol" alum talked about having a rough pregnancy during her appearance on "The Ellen DeGeneres Show" in December.

"It is so upsetting when I ask women [about their pregnancy] 'cause they'll be like, 'Oh I had ... you're gonna love this...' and I'm like, 'Oh, were you sick the first ...?' and they're like, 'No!' and I want to like hit all of them with my car," Clarkson joked. "I vomit a good dozen times a day. Like, it's like bad."

Clarkson is known for hits like "Stronger" and "Since U Been Gone."

The Associated Press contributed to this report.

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