Famous pre-nuptial agreements(Image: Mike Kemp - Getty)Famous pre-nuptial agreements(Image: Mike Kemp - Getty)

It seems that when you're rich and famous, the notion of 'what's mine is yours and yours is mine', is something few couples believe in these days. In fact, the rise of the pre-nuptial agreement, a marriage contract drawn up before tying the knot, proves the exact opposite. No sooner have couples publicly declared they want to 'spend the rest of the lives together' than they scurry off to their solicitors to protect what's theirs should their betrothed turn out not to be The One.

With penalty payments for infidelity, get-out clauses for slipping back into drink and drugs and set payouts for each year the marriage lasts, it's clear that you can put a price on love after all.