Mark Ronson's Daisy split

Sep 15, 2008, 11:55 GMT

09/08/2008 - Mark Ronson and Daisy Lowe - Mercedes-Benz Fashion Week Spring 2009 - Day 4 - Outside Arrivals - Bryant Park - New York City, NY, USA © Janet Mayer / PR Photos

Mark Ronson and Daisy Lowe have split up.

The 33-year-old producer and the 19-year-old model, the daughter of British singer Pearl Lowe and rocker Gavin Rossdale, have decided to separate after dating for around six months.

A spokesman for Daisy said: "Yes it's true. They've split. However, this is a private matter between Daisy and Mark. There is nothing else to say."

The pair decided to call time on their relationship after a heated argument in New York last week, during which Daisy is believed to have told the musician she'd "had enough" and was leaving him.

It is also believed the 14-year age gap between the couple had started to become a problem for Daisy.

Mark put on a brave face at the UK premiere of 'Righteous Kill' - which stars Robert De Niro and Al Pacino - in London yesterday (14.09.08).

Despite refusing to answer questions about the break-up, the producer revealed he is thrilled with the results of his collaboration with the Kaiser Chiefs.

Mark - who produced the band's upcoming LP 'Off With Their Heads' - told BANG Showbiz: "It's a return to their first record 'Employment', it has a similar energy to that - but it's heavier.

"There are some other slower, prettier songs, which I think are more beautiful than anything they've done before."

The British rockers - fronted by Ricky Wilson - also helped the hitmaker improve his sense of humour during recording sessions.

Mark added: "I learned how to be much funnier working with them. Those guys are like stand-up comedians all the time, non-stop."

'Off With Their Heads' - which features collaborations with Lily Allen and New Young Pony Club - is released in October.