Heather Mills attempted to humiliate Sir Paul McCartney by flaunting a younger lover in front of him following their bitter divorce, according to the TV star's former nanny.
The couple separated in 2006 after four years of marriage, leading to an ugly public divorce battle.
The union was officially dissolved in 2008 and the former Beatle was ordered to hand over $38.9 million (£24.3 million) of his fortune to Mills, as well as annual payments for their daughter Beatrice - but the pair's relationship remained frosty.
And Mills was keen to show off her new personal trainer boyfriend, Jamie Walker, to taunt MCCartney whenever he dropped Beatrice off at his ex's home, Sara Trumble told an employment tribunal on Monday (29Mar10).
She says, "When Paul would bring Beatrice round to the house, Heather made Jamie go out and meet Paul, as if to make a show of him."