United Kingdom, Aug. 11 -- Christie Brinkley believes marriages should be reviewed every five years so couples can split up easily if they get "bored".

The 71-year-old model - who has been married four times including to music legend Billy Joel - is convinced couples should be given the option to end their unions without having to go through lawyers by reviewing their relationship every few years.

During an appearance on Kristin Davis' Are You a Charlotte? podcast, Christie explained: "'You could get married, like: 'We'll see if you want to renew it in five years'. Every five years, go: 'Do you want to renew?'

"If you're getting bored or whatever, you can get out of it without all the lawyers and all that stuff."

Christie was previous...