Kelly Osbourne and her fiancé, British model Luke Worrall, have split up.

People reports that in a Twitter post, Osbourne said: "Thank you all so much for your support but the matter is private and [I] will not be commenting. Enough damage has already [been] done!"

Twenty-five-year-old Osbourne and 20-year-old Worrall became engaged in November 2008.