Heather Mills

A temporary truce in the bitter divorce battle between Heather Mills and Paul McCartney took place Saturday at the third birthday of their daughter Beatrice at a children's play center in East Sussex, England, according to published accounts. Both parents behaved amiably during the 90-minute lunchtime gathering, Britain's Hello! magazine reports. However they left separately, with Paul taking Beatrice with him in a chauffeur-driven car some 10 minutes before Heather took off with some leftover birthday cake, the publication reports. In all, about 15 guests, a mixture of adults and children, attended the party, which reportedly featured entertainers for the kids. One mother whose son happened to be at the children's center as the party was wrapping up told Australia's Melbourne Herald Sun newspaper: "Bea looked lovely and seemed to be having a wonderful time. If I did not know what had been going on in their marriage in the last few months, I would never have guessed." The mom added, "Bea was smiling and laughing just like any other child, having a whale of a time." McCartney, 64, and former model Mills, 38, announced their separation in May, after four years of marriage. Divorce papers were filed in July.