Sir Paul McCartney is reportedly throwing a 'moving-on' party this weekend (15-16JUL06) to celebrate a new era without estranged wife Heather Mills. The couple have had a turbulent time since splitting two months ago (MAY06). The ex-beatle wants to put the difficulties behind him and celebrate the next chapter in his life. Celebrities invited include George Harrison's widow Olivia and Ringo Starr's wife BARBARA BACH. MCCartney's children STELLA, 34, MARY, 36 and James, 28 will also be attending. A source close to the rocker tells British newspaper Daily Mirror, "It's been a tough couple of months for MACca and he wants to put it all behind him. "A lot of people have been very supportive recently and it's his way of saying thanks."