Is this the end of Kelly Clarkson's angry breakup songs? The Grammy-nominatedAmerican Idol alum announced on Dec. 15 that she's engaged to Brandon Blackstock. "I'M ENGAGED!!!!!" she posted on Twitter. "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 later shared a picture of her ring, writing: "It's a yellow canary diamond with diamonds around." Kelly began dating the talent manager (whose father is married to Reba McEntire) a year ago.