Britney Spears infuriated her ex-husband Kevin Federline by leaving their children at home with a nanny last weekend.
The singer agreed to take care of Sean Preston and Jayden James over Easter - the first weekend she had spent with them since her rehab stint.
However, Britney went out for five hours as she watched her reportedly new boyfriend Luke Walton play for the LA Lakers. She then headed out to shopping with friends.
A source told the Sunday Mirror, "Kevin is very annoyed to say the least. He feels totally let down. You can see his point - here she is, it's just two days and she can't stay in with her kids?"
Luke Walton denied rumours that he is dating the 'Toxic' singer, telling the LA Times, "The rumors aren't true."