Sex and the City's Kim Cattrall pleads for help in search for missing brother Christopher

The 55-year-old has been missing for the best part of a week

The actress said her brother was 'one of a kind' (Reuters)

Sex and the City actress Kim Cattrall has appealed for information about her brother, who went missing from his home in Canada almost a week ago.

The actress used social media to ask for help, saying Christopher Cattrall had been reported missing from his home in Alberta since Tuesday. She said his keys, phone, and wallet were left on the table, the front door was unlocked, and his seven “beloved” dogs were unattended.

“This is not like Chris. He he would never leave his unlocked home without those items nor his 7 beloved dogs,” she wrote.

“Chris is 55 years old, 6 feet tall, 200 pounds, blue eyes, short brown hair, goatee, average build and usually wearing a waist length hooded winter coat with black gloves, blue jeans and calf high black winter boots.”

She added: “He’s a one of a kind brother. Help us bring him home safe. Please spread the world. Many thanks for reading this.”

The 61-year-old actress, probably best known for playing the character of Samantha Jones in the New York-based television series Sex and the City, used her Instagram, Facebook and Twitter pages to ask for help.

She requested that anyone who knew where he was to contact the Royal Canadian Mounted Police in the town of Blackfalds, Alberta, or CrimeStoppers.

His step daughter, Katie Osmond, also used social media to share photos of Mr Cattrall.

She wrote: “I know it’s hard to find people when they’ve gone missing. I’m praying that he comes home safe and unharmed.”