Hollywood actress Jennifer Aniston has been harbouring a secret phobia as she is terrified of flying.

The former Friends star admits she falls to pieces when she is due to step on a plane, and even alcohol fails to calm her nerves.

During an interview with Britain's Daybreak Tv show, Aniston was asked to name her greatest fear and she replied, "Flying".

When host Kate Garraway remarked, "But you do so much of it (for work)," the actress added, "Yeah, I know. You can't get a big enough drink. It doesn't actually help."

However, Aniston admitted she has become better at conquering her fear in recent years, adding, "I have actually got much better."