Kelly Osbourne has been hiding a secret from fans - she quietly became engaged a few weeks before Christmas, according to a new report.

Ozzy Osbourne's daughter is said to be "really excited" about heading down the aisle with vegan chef Matthew Mosshart, the brother of The Kills rocker Alison Mosshart.

kelly osbourne matthew mosshart

Kelly and rumoured fiancé Matthew Mosshart

A source tells Us Weekly magazine, "Kelly is the happiest she's ever been. Her career is going well, and she's in a healthy relationship with a wonderful guy."

The couple first met at Kate Moss' wedding in July 2011 and have been dating for more than a year.

Kelly was previously set to wed model Luke Worrall, but she broke off their engagement and dumped him in 2010 amid allegations of his infidelity.

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    From left to right, Kelly Osbourne, Ozzy Osbourne, Jack Osbourne, Sharon Osbourne and Aimee Osbourne. Getty

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  • Kelly Osbourne's Healthy Transformation

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