This is the sweet picture Kate Middleton sent well-wishers after Prince Louis' christening

(Image credit: Getty)

When all you get these days in the post are bills and ads (I'm not old, you're old), it's actually quite nice to get a thank you card now and then. Now imagine getting a thank you card from the Royals, that's a whole other level.

Instagram user @loopycrown3 has received more than her fair share, as she's a self-proclaimed monarchist who writes to the Royal family a lot to wish them well during important events.

She recently shared the thank you card Kate Middleton sent her to thank her for her well wishes for Prince Louis' christening, and it was adorable.

A photo posted by on

On the front was the Cambridges' favourite picture of the day, one that they loved so much, they shared it as an additional bonus on the Palace's Instagram feed, featuring a beaming Kate and her baby in their formal wear.

A photo posted by on

Inside the card was the following message: 'The Duke and Duchess of Cambridge were touched that you took the trouble to write on the occasion of the Baptism of their son, Prince Louis. Their Royal Highnesses are so grateful for all the wonderful messages they have received and send you their warmest thanks and best wishes.'

A photo posted by on

If you scroll down the feed, you'll also see the thank you card Meghan Markle sent following her birthday, which is a picture of her greeting crowds during an official visit.

A photo posted by on

It included this message: 'The Duchess of Sussex is so touched you took the troupe to write as you did on the occasion of her 37th birthday. It really was most thoughtful of you and Her Royal Highness sends you her heartfelt thanks and best wishes.'

Penny Goldstone

Penny Goldstone is the Digital Fashion Editor at Marie Claire, covering everything from catwalk trends to royal fashion and the latest high street and Instagram must-haves.

Penny grew up in France and studied languages and law at the Sorbonne Nouvelle University in Paris before moving to the UK for her MA in multimedia journalism at Bournemouth University. She moved to the UK permanently and has never looked back (though she does go back regularly to stock up on cheese and wine).

Although she's always loved fashion - she used to create scrapbooks of her favourite trends and looks, including Sienna Miller and Kate Moss' boho phase - her first job was at, sourcing the best deals for everything from restaurants to designer sales.

However she quit after two years to follow her true passion, fashion journalism, and after many years of internships and freelance stints at magazines including Red, Cosmopolitan, Stylist and Good Housekeeping, landed her dream job as the Digital Fashion Editor at Marie Claire UK.

Her favourite part of the job is discovering new brands and meeting designers, and travelling the world to attend events and fashion shows. Seeing her first Chanel runway IRL at Paris Fashion Week was a true pinch-me moment.