A spokesperson for Stacey told Closer: "It is with regret that I can confirm that Stacey's relationship with Aaron has unfortunately come to an end. Her priorities are her two children. She thanks you for your support at this time."
Stacey began dating Aaron in 2009 and the pair became engaged in December 2011 after the painter popped the question during a romantic trip to New York. Shortly after the trip the couple announced they were expecting their first child together and they welcomed son Leighton in May 2012.
Stacey, 24, is also mum to Zachary, six, from a previous relationship.
Last October Stacey revealed that despite being engaged for over a year she and Aaron hadn't set a date for a wedding.
She said: "Well in my lovely, fun, fantastic brain, I would would like really to get married next year, but he’s the more laid-back sort of bloke saying, 'Oh, it doesn’t really matter does it? We’ll wait a few years.'"
Stacey shot to fame after appearing on the X Factor in 2009 and the Essex girl went on to win I'm A Celebrity in 2010.