As Meghan Markle once said: 'With fame comes opportunity, but it also includes responsibility - to advocate and share, to focus less on the glass slipper and more on pushing through glass ceilings. And, if I'm lucky enough, to inspire.' Celebrate the Royal Wedding on 19 May with Katy Birchall as she tells the stories of 24 or the world's best-loved and most inspirational princesses, including the British Royal Family's newest member.