Kelly Osbourne has a secret, and she can no longer keep it:
The celebrity fashion expert is engaged to Matthew Mosshart!
The couple has reportedly been dating for about a year and quietly agreed to marry a few weeks prior to Christmas, an insider confesses to Us Weekly.
"Kelly is the happiest she's ever been," the Osbourne friend says. "Her career is going well, and she's in a healthy relationship with a wonderful guy."
Speaking to British magazine Fabulous in October, Kelly gushed of her now-fiance:
"I couldn't believe that he truly liked me because I never think people ever could. But I'm so happy. I don't think I've ever really known what love is like before."
Awwww! We send these two our very best wishes.