According to the Daily Mirror, Michael raced around the posh London store – owned by Mohammed Al Fayed – on Wednesday (Oct 12), and reserved two watches worth £55,000 and £30,000.
His children Prince Michael, eight, Paris, seven and Prince Michael II, three, then descended upon the toy department.
An insider said: "He was only in the store for about 30 minutes. His kids had a fantastic time in the toy department. They fell in love with this gigantic toy Hummer".
"After spending thousands of pounds on gifts for them, including life-size teddy bears, Michael signed autographs for fans.”
Michael’s spokesman said: “Last time he came to London he went to Hamleys - but he loves the cuddly toys at Harrods.”
Source: icEssex