Alexa Chung has advised women not to change their hairstyle after a bad break-up.

The former model-turned-TV star thinks girls are not in a ''fit state'' to make long-term decisions like revamping their hairstyle after experiencing a dramatic event in their life and may live to regret their impulsive actions.

She explained: ''Hair is so linked to how we feel and everyone goes for something radical after a break-up. But my advice if you've just suffered heartbreak or you've broken up with someone is to not touch your hair.

''It's the first thing women do, but you're not in a fit state to make decisions that are long term. You'll have to spend the next four years growing it out.

''Don't have a fringe cut. Don't bleach it. Don't do anything because you'll live to regret it.''

The 29-year-old beauty claims she can tell when her friends are feeling sad because of the state of their hair and cites pop star Britney Spears as an example of radical post-split hair disasters, after the singer infamously shaved her head following her break-up from husband Kevin Federline in 2007.

In a self-penned feature for Stylist magazine, she wrote: ''When my friends are heartbroken I can tell that they're sad; their hair just starts looking a bit forlorn.

''Like when Britney Spears got sad and shaved of her hair. That's the ultimate warning - heed that. If you're not feeling good, don't do anything to your hair.''