Expert says Kate Middleton has 'barely aged' in the past 10 years as she celebrates 40th

Kate Middleton’s most iconic looks from student to stylish Duchess as she turns 40

The Queen to mark 40th birthday of ‘firm favourite’ Kate Middleton with sweet gesture

40 things you didn’t know about Kate Middleton on her 40th birthday: Net worth, risqué nicknames and a ‘serious’ childhood operation