Audrey Hepburn's 'Charade' chat-up line named best

The study was conducted by Badoo.com, a social networking platform for meeting new people. It gave its female users across Britain, US, Canada, Australia and New Zealand, the chance to pick from a shortlist of 10 "ice-breakers", which women could use to open an online conversation with other Badoo users.

Audrey Hepburn. Pic/Santa Banta

Hepburn's line, delivered by the actress to Cary Grant in the 1963 romantic thriller "Charade", emerged the most favourite when it came to women approaching men.

"This is a study of chat-up lines in action, and not just any lines, but Hollywood's finest," Louise Thompson, Badoo's director of public relations, said in a statement.

The list consisted of 10 chat-up lines - flirtatious or romantic lines - first delivered by actresses in Hollywood movies. Badoo then analysed the data from 1,000 interactions using such lines. It measured which lines were most sent by women.

Top five chat-up lines most picked by women to approach men:

1. "I don't bite, you know, unless it's called for." - Audrey Hepburn to Cary Grant in "Charade" (1963)

2. "You don't have to say anything! Oh, maybe just whistle. You know how to whistle don't you?" - Lauren Bacall to Humphrey Bogart in "To Have and To Have Not" (1944)

3. "You don't know how hard it is being a woman looking the way I do." - Kathleen Turner to Bob Hoskins in "Who Framed Roger Rabbit?" (1988)

4. "Was that cannon fire, or is it my heart pounding?" - Ingrid Bergman to Humphrey Bogart in "Casablanca" (1942)

5. "You give me premature ventricular contractions! You make my heart skip a beat." - Natalie Portman to Ashton Kutcher in "No Strings Attached" (2011)