Researchers found that they will typically spill the beans to someone else in 47 hours and 15 minutes.

A study of 3,000 women aged between 18 and 65 also found that four in ten were unable to keep a secret, no matter how personal or confidential the news was.

More than half admitted that alcohol could prompt them to dish the dirt. Boyfriends, husbands, best friends and mothers were most likely to be initial recipients of the information.

Michael Cox, UK Director of Wines of Chile which commissioned the research said: 'It's official - women can't keep secrets.'

'We were really keen to find out with this survey how many secrets people are told. What we didn't bank on was how quickly these are passed on by those we confide in.

'No matter how precious the piece of information, it's often out in the public domain within 48 hours.

'That means every single Brit who has confided in a friend should be worried because they don't know where their secret is heading.

'The fact they offload gossip to someone completely unrelated to the matter or in a different social group can be comforting, but while nine in ten girls deem themselves trustworthy - they still have spilt the beans.

'And juicy gossip can really flow after a couple of glasses of wine.'

The study found that the average woman hears three pieces of gossip each week, and will pass it on to at least one other person.

Three in ten 'have the urge' to reveal secrets, with nearly half telling another to 'simply get it off their chest'.

However, two thirds end up feeling guilty after spilling the beans.

Three quarters claim they are capable of keeping quiet about a secret, and 83 per cent consider themselves 100 per cent trustworthy.

Yet more than four in ten think it is acceptable to share a friend's secret with someone who does not know them, with over 40 per cent saying their husband is their ultimate confidante.

Intimate issues, true cost of purchases and affairs emerged top of the secret-keeping list.