Estranged couple Sir Paul McCartney and Heather Mills reunited last week (21JUN06) to watch their daughter BEATRICE's school concert. The former beatle, 64, and anti-landmine campaigner, 38, sat beside each other at the two-year-old tot's nursery in Sussex, England. Following the youngster's show, MCCartney hugged and kiss his estranged wife on the cheek after walking Mills and Beatrice to her car. The couple announced their split in May (06) after nearly four years of marriage.