The 26-year-old presenter and her famous mother were inspired to compare the merits of their family pets after tuning in to watch the Westminster Kennel Club Dog Show - a two-day event where animals are judged against their breed standards - which took place in New York earlier this month.
Kelly - whose father is rocker Ozzy Osbourne - tweeted on 23.02.11: "Watching the Westminster dog show with my mum and we are screaming at the tv if anyone could actually see us right now.... Obsessed
"Now my mum and I are having our own Westminster dog show with all our dogs the winner is rocky my dad`s dog. (sic)."
After enjoying their home-based contest, Kelly and Sharon continued watching the televised competition and couldn`t help be amused by some of the dogs.
Referring to the spoof documentary `Best in Show` - which follows pet owners and their dogs competing at a similar event - she wrote: "The more I watch this the more I realise how f***ing funny and dead on the movie "best in show" really is!
"Ohhhh my god there is an Australian sheep dog called beyonce! That is the funniest thing ever. (sic)"
Kelly has two dogs - a Pomeranian named Sid and a Doberman called Blue, who was a gift from her brother Jack to protect her when she moved into a new apartment alone - while Sharon and Ozzy are believed to have 12 pooches between them.