Hollywood diva Liz Hurley on Friday celebrated her boyfriend Arun Nayar's birthday in the presence of around 50 guests at the majestic Devigarh palace in Udaipur, Rajasthan.

Liz was dressed in a red skirt and top and Nayar was in a white suit, palace sources said.

There was speculation that Liz and Nayar might exchange wedding vows after over two years of romancing.

Security was tight in and around the 18th century palace in view of the interest the visit has generated.

The actress, her son Damien and Nayar arrived late Thursday night at the Dabhok airport in Udaipur district and drove straight to the palace-turned-hotel amid tight security.