Mariah Carey and Nick Cannon's lawyers are negotiating their divorce settlement.

The 'All I Want For Christmas' hitmaker is said to be living separately from her producer husband in New York as the couple's lawyers come to a decision over their property and a custody agreement regarding their four-year-old twins Moroccan and Monroe.

According to gossip website TMZ, sources claim that their marriage has been on the rocks since the 'America's Got Talent' host admitted he'd slept with a Kim Kardashian and a number of other famous women while being interviewed on a US radio show earlier this year.

Following the revelations, he also admitted Mariah, 44, wouldn't sleep with him until they were married, leaving the singer feeling ''humiliated''.

The couple - who were married on Mariah's private estate in the Bahamas in 2008 - are also said to have been fighting constantly since Nick, 33, claimed he had earned $75 million for their family since 2011, leaving her ''incredulous'' and ''angry''.

He is now said to be living in hotels after the pair put their mansion up for sale in July.

A source recently said: ''He hasn't been staying at their home. He's been living out of hotels. They're fighting a lot.''