What started out as a typical holiday weekend ended in mourning for Kelly Osbourne, as one of her family's canine companions passed away on Christmas Eve (December 24).

The 27-year-old was spotted out in West Hollywood prior to the sad news as she tended to last minute shopping needs at Fred Segal while tweeting, "Christmas is F**KING expensive!!!! How ever the happiness a good gift can bring is more then worth the expence!"

And while the cost of the wintertime holiday was Miss Osbourne's focal point at the time, her attention quickly shifted to the death of her family's 14-year-old Chihuahua, Martin.

Of the pup's passing, Kelly tweeted, "today is a sad day in the Osbourne family house hold we lost R dog martin of 14 years. Devastated does not quite sum it up! #NotSoMerryXmas"

Martin will always be remembered with a spot on family matriarch Sharon Osbourne's website, which features a picture of the trusty dog with a line reading: "Professionally known as Martini Bianco- is a sophisticated little creature. Shunning the affection of women, Martin prefers the love of a good man."