Kelly Clarkson married her boyfriend Brandon Blackstock in a secret ceremony on Sunday, revealed Monday on Twitter.

"I'm officially Mrs. Blackstock :) We got married yesterday at Blackberry Farms in TN, the most beautiful place ever!" she wrote on the social media site.

Social media user Renee Berank was the first to reveal that the singer wed.

"Kelly Clarkson got married at Blackberry Farm today." Berank wrote before Osbourne confirmed the news herself, adding she found out from her sister who works at the venue. "My sister is the chef at Blackberry Farms...CRAZY!"

A rep for Blackberry Farms refused to confirm or deny the claim to Radar Online, saying they "have nothing to say." A second source told Hollywood Life the couple wed at the same location on Sunday.

Us Weekly reported on Friday that the couple applied for their marriage license on Oct. 15 in Tennessee.

Clarkson tweeted on Aug. 22 the couple planned to elope. She wrote, "We are eloping for one reason only. We both want an intimate ceremony." She told Ryan Seacrest during an interview with his radio show a few days prior that she was "over it" when it came to wedding planning.

"It's so overwhelming. We're just doing a lot," she explained. "Touring, and the wedding, and the Christmas album...so I'm over the wedding part."

Clarkson announced her engagement to Blackstock in December.

"I'M ENGAGED!!!!! I wanted y'all to know!! Happiest night of my life last night! I am so lucky and am with the greatest man ever :)" she tweeted.

Blackstock is the son of famed music manager Narvel Blackstock. His stepmother is country legend Reba McEntire.  Clarkson shared engagement photos featuring herself wearing a wedding gown and with her bridesmaids in late August.

View the images from Clarkson's wedding and engagement photo shoot above.