How popular are the Duke and Duchess of Cambridge?
Do we even have to answer that question at this point?
Prince William and Kate Middleton have received about 60,000 letters and cards of goodwill from members of the public since their engagement nearly a year ago.
The number of messages peaked again around the time of the royal wedding in April - and the coolest thing about it is that a return address guarantees a reply.
"There was everything from posters made by classes of schoolchildren to cards sent by other members of the public," says a Palace aide of the letters to the royals.
A group of junior girl guides - called Rainbows - in Glasgow sent a congratulations card, and then got word that the Duke and Duchess were "immensely touched."
Workers in the couple's office in St. James's Palace are still going through all the letters and cards in a bid to answer them, which they say they do ... eventually.
"It will take quite a while for the small team to get to answer them all, but everyone gets a reply if there is a return address," says a Palace aide of the fan mail.
Sadly, it is not known if Pippa Middleton responds to date requests.