The British supermodel was rumoured to have wed in a secret ceremony with The Kills rocker in August, but a close source to her has now denied any such event took place.
An employee of the 36-year-old beauty's said: "She is definitely not married. Any implication she is, is factually incorrect."
Kate and Jamie first got together in September 2007, and it was believed the pair married in Sicily in an intimate ceremony in a small church.
A source said: It was quiet - but still very romantic.
"Kate's had a fairly turbulent love life but she's a romantic at heart. The plans were kept very quiet as Kate wanted the day to be low-key and purely a Celebration of their love."
They were then reported to have danced around trees outside the church.