Seems like giving birth surpassed going to rehab as the No. 1 celebrity activity last week: Fashion designer Stella McCartney welcomed her third child on Tuesday, a son, Beckett Robert Lee. Beckett, whose father is Alasdhair Willis, joins brother Miller, 3, and sister Bailey, 1.
Stella McCartney is most famously known as Paul McCartney's daughter, and loving, former step-daughter to Paul's ex, Heather Mills.
