You can now call her "Mrs. Know It All" as Kelly Clarkson made it official over the weekend. The singer married her longtime boyfriend, talent manager, Brandon Blackstock, in Tennessee. She confirmed the news on Twitter Monday (October 21).

"I'm officially Mrs. Blackstock :) We got married yesterday [Sunday, October 20] at Blackberry Farms in TN, the most beautiful place ever!" she wrote, including some photos of the couple on their big day. The singer first sparked wedding rumors when she and Blackstock applied for a wedding license last week, E! News reported. Clarkson had previously shared she would walk down the aisle in a dress designed by Temperley London.

Clarkson and Blackstock got engaged last December after dating for about a year. Prior to the engagement, in June 2012, Clarkson opened up about her romance with Blackstock, who is the son of Clarkson's manager, Narvel Blackstock, and the stepson of country superstar Reba McEntire.

"I know — where's the kick in the ass? I told my assistant that today. I said, 'I'm just waiting for something to blow up,' " she shared with Redbook. "She said, 'No, that's what happiness is.' I'm like, 'Maybe I've never been happy!' Because Brandon does, he makes me happy."

Back in June of this year, Clarkson released a country song all about getting hitched called "Tie it Up." On it, she sings, "Let's set the date/ Let's hire a band/ Let's cut the cake/ Tie up the cans ... Every wall needs a frame/ Every ball needs a chain/ I'm talkin' about tying the knot/ Tie it up."

White won't be the color on her mind for long. Clarkson is set to release a holiday album, Wrapped In Red, on October 25.