Now they're married, they don't feel the need to change the status quo but Tomkat are just one celebrity couple that eschew normal living arrangements.

King of domestic bliss, albeit not as we know it, is Hugh Hefner. Not that anyone supposed for a minute life at the Playboy Mansion would ever be a run-of-the-mill affair but the permanent fixture of girlfriends Holly, Madison and Kendra adds that extra frisson.

Singer Pink manages to spend one week out of every month with her motorcross racer husband, Carey Hart, thanks to work commitments. She might want to rethink this, as Hart was recently seen canoodling with a blonde in a tight dress in a Hollywood nightclub.

The ever-unconventional Helena Bonham Carter and husband Tim Burton live in London in separate houses adjoined by a corridor . . .they couldn't agree on a decor apparently.

Natalie Imbruglia takes it to another level by living on a different continent to her husband, Daniel Johns of Aussie grunge outfit Silverchair. Absence, she maintains, makes the heart grow fonder but we urge her to look to the Pink example.

Finally, who didn't rejoice when they heard that the world's most disgustingly perfect couple, Brangelina, were sleeping apart?

But as it turned out, they were only doing so because baby Shiloh wasn't sleeping so well and Angelina elected to stay with her while dad Brad caught up on some kip.

Which proves that not only are they gorgeous, rich philanthropists, but they're depressingly normal as well.

You've just got to hate them.