Katie Price and Peter Andre have clashed over their children, as divorce proceedings between the pair turn sour, according to reports.

The couple are believed to have fallen out after Andre was allowed care of Junior, 3, Princess Tiaamii, 1, and Harvey, 6 – Price's son by footballer Dwight Yorke – over the weekend.

According to The Sun newspaper, the singer was meant to look after the children over three days, but returned them early yesterday in order to rehearse his new album.

Price is said to have accused her estranged husband of reneging on their deal, but the singer reportedly claimed nothing had been agreed in writing.

“Pete wants to see much more of the kids. But he’s sticking to the agreement drawn up by the lawyers,” a source said.

Price is said to have had to cancel a trip to see Leona Lewis in concert after Andre returned the children early.

The former glamour model is also believed to be angry at claims she hasn't allowed Andre sufficient time with the children since the couple announced their split last month.

“She dropped everything when Pete called her and changed the arrangements,” a source said.

“What’s odd is that Peter had been moaning he didn’t see the kids enough, then when he gets the chance he hands them back to Katie.”

Price and Andre married in 2005 after meeting on the reality TV show I'm A Celebrity Get Me Out of Here.

Katie Price and Peter Andre