Singer George Michael has declared what few of us doubted - that Kate Middleton is stronger than her late mother-in-law Princess Diana.The 50-year-old singer, who is on the promotional trail as he is promoting a new album, Symphonica, said that Kate was better able to take on the constant scrutiny and media attention that came with marrying into royalty."I think she would have been incredibly happy for William and Kate," he told Entertainmentwise."And I think she'd also be really, really pleased that William has met and fallen in love with someone who has the strength of character to be able to deal with the sort of things that she couldn't."I know just how challenging and exacting that level of fame can be. It's like living in a goldfish bowl," he said."Sometimes, especially during the Faith years, I felt close to lunacy."Last year, Michael fell out of a car doing 70mph on a motorway after, he said, attempting to open and close a door that was not properly shut.