Her full name is "Kitty White" and her nationality is British. Although she was conceived of by the Japanese company Sanrio, her backstory explains that she was born in a suburb outside of London.

Her height is "five apples" and her weight is "three apples."

Which makes her about 1 foot and 8 inches tall and puts her weight at 1.5 lbs.

Her parents' names are George and Mary. And she has a twin sister named Mimmy. 

She was born in 1974, and came to the United States in 1976. Her birthday is November 1.

Hello Kitty (or Hello White or whoever you are!) has no mouth.

The reason, according to Sanrio..."Hello Kitty speaks from her heart. She’s Sanrio's ambassador to the world and isn't bound to any particular language."