The Osbournes suffered a death at Christmas - the family's pet dog, Martin, died on December 24.
Kelly Osbourne broke the sad news via Twitter.com early on Christmas morning.
She wrote, "Today is a sad day in the Osbourne family house hold (sic) we lost R (our) dog martin of 14 years. Devastated does not quite sum it up! NotSoMerryXmas."