Sharon Stone was left hot under the collar on Thursday after flirting with a group of firemen who visited her movie shoot.

The Basic Instinct star is filming upcoming comedy Fading Gigolo in the Big Apple and was surprised to see the Fire Department, City of New York's (FDNY) Ladder Co. 20 crew on a street nearby.

She happily posed for photographs with the grinning firefighters as stunned onlookers watched, and was even seen holding hands and chatting with one of the emergency workers.

Fading Gigolo is scheduled to come out next year and stars Woody Allen, Sofia Vergara alongside Stone.