After dating for a year, American Idol winner Kelly Clarkson and boyfriend Brandon Blackstock are getting married.

The 30 year-old multi-Grammy winner who is the most successful Idol winner ever with over 35 million sales worldwide, announced her engagement on Twitter over the weekend and showed her yellow canary diamond.

“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.”

Her 35 year-old talent manager fiance is divorced with two-children and the son of her manager Narvel Blackstock, and the stepson of Reba McEntire.