Britney 'confronts' Federline girlfriend

Britney Spears has reportedly confronted ex-husband Kevin Federline's girlfriend Victoria Prince about her relationship with the star's children.

The singer apparently invited the couple for a dinner party at her house in Calabasas, Los Angeles, and issued Prince with a warning about her involvement in the two boys' lives.

"Britney is still not happy that Victoria has been spending so much time with her sons," a source told Heat.

"She wanted to make sure that everyone understood that she was the boys' mum and it was going to stay that way."

Despite the warning, Spears is said to have been in a relaxed mood during the evening.

"It was Britney's idea to have the meal. She gave the housekeeper the night off, so it wasn't a fancy meal - just frozen pizzas and some leftovers," the source added.

"She thought it would be helpful to meet Victoria and get to know her a little.

"The conversation was a bit rocky at times, and there were a few awkward silences. But afterwards Britney seemed more relaxed."

Spears begins her mini-residency at London's O2 arena from June 3 and plays a one-off show in Manchester on June 17.