Christie Brinkley's shares controversial idea for marriage after tying the knot four times

Christie Brinkley has shared a controversial idea for the future of marriage.

The supermodel and author, who has been married four times, including to music legend Billy Joel, says she thinks couples should have to "renew" their union after a certain amount of time.

The 71-year-old explained her view on Kristin Davis' podcast Are You a Charlotte?

"You could get married, like, 'We'll see if you want to renew it in five years,'" Brinkley said.

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"Every five years, go, 'Do you want to renew?' That way, if you're getting bored or whatever, you can get out of it without all the lawyers and all that stuff."

Brinkley shared her comment as the pair discussed an episode of Sex and the City as part of the re-watch series.

Brinkley's first union was to French artist Jean-François Allaux from 1975 to 1981.

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She later admitted she had married too young, having been just 19 at the time.

"I got married too young. I started to feel constrained and regretted being tied down," she said.

Her second marriage was to music legend Billy Joel. The couple were wed for ten years and they welcomed their daughter Alexa Ray in 1985.

"Booze was the other woman", Brinkley wrote in her book Uptown Girl, adding that the Piano Man singer's addiction "was bigger than the both of us" and ultimately made him choose drink over their relationship.

Brinkley began a relationship with real estate developer Richard Taubman shortly after her split from Joel in 1994 and they married later that year.

She later described their relationship as emotionally difficult and it didn't last the year, telling Today Taubman "loved my money more than me".

Her fourth and final marriage to Peter Cook resulted in her most painful split.

The couple were happily married until 2006, when Brinkley discovered her husband having an affair with his teenage assistant.

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What followed was a bitter decade-long legal battle.

She described it in her memoir as "the most tortured relationship I've ever had."

Despite this tumultuous time, Brinkley remains open to the idea of love, but did rule out getting married again.

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"I would never get married again. With what I know, I don't see why anyone would get married," she told the New York Times.

For now she is happy being alone.

"You have to be happy alone so that you get with a man for the right reasons – and you're not clinging to him.

"I am pretty comfortable with my life the way it is, so que será, será!"

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