Kortney Kardashian and Scott Disick split after he is pictured with ex in Monaco

The reality star has called it quits with her long-term partner as months of his partying ways came to a head.

Kourtney Kardashian has split up from long-term partner Scott Disick after he was pictured cosying up to his ex-Chloe Bartoli in Monaco.

According to E! News, the pair have ended their relationship after first getting together in 2006.

It follows photos of party animal Scott with brunette beauty Chloe in Monte Carlo last week, amid rumours the reality star had kicked him out.

"Kourtney has always taken Scott back and been by his side, but now with three kids it has gotten old," as source told the site. "Kourtney has to do what's best for the kids."

"Scott has been running around saying he's single," the source added. "Kourtney dumped him after she saw the pics and he hasn't been home after a month-long party binge."

Another source claimed to the site that Scott has been spending time with friends who "are not a good influence" on him.

The couple have had a turbulent relationship over the last nine years, briefly having split in 2010 before rekindling their romance later that year.

Scott temporarily gave up drinking and his partying ways for Kourtney, but is claimed to have taken it up again recently.

From their three wonderful children to Scott's battle with his own personal issues, there have been some incredible highs and devastating lows for the pair.

There was even an almost-proposal in 2011, although Kourtney scuppered Scott's plans before he could pop the question - Take a look back at their relationship highs and lows.