The British model, actress and designer, 45, Tweeted the news Sunday: "Not a great day. For the record, my husband Arun and I separated a few months ago. Our close family & friends were aware of this."
Hurley's announcement coincided with a report in Britain's News of the World claiming her alleged affair with cricketer Shane Warne. The tabloid has pictures and video of the couple kissing, and says that they spent the night together Wednesday at London's Bentley Hotel.
Hurley and Nayar began dating in 2003 and married in March 2007 at Sudeley Castle in Gloucestershire, where they exchanged vows in an Anglican ceremony before 300 guests. Days after the British ceremony they threw a sumptuous week-long celebration at Umaid Bhawan Palace in Jodhpur, India, capped by a Hindu wedding ceremony.
Hurley has an 8-year-old son, Damian, with her ex Stephen Bing. She previously dated actor Hugh Grant for 13 years before the pair called it quits in 2000.