OTTAWA -- Canadians will soon be able to send mail marked with a photo of the royal baby.

Canada Post has unveiled a stamp featuring Prince George with his parents, Prince William and Kate.

The stamp is being announced a week before the royal infant is to be christened in London on Oct. 23, just over three months after his birth.

Canada Post says George is the youngest royal to make an appearance on a Canadian stamp.

The agency had previously issued a stamp to commemorate William and Kate's engagement and another to mark their wedding.

The latest limited-edition stamp will be available online and at post offices across Canada starting Oct. 22.

"When his royal highness was born, people around the world celebrated...This stamp proudly memorializes this moment in our history," said Lisa Raitt, the minister responsible for Canada Post.