The one jewellery rule the Queen swears by

The Queen's dresser Angela Kelly has revealed everything we need to know about how she picks her Majesty's outfits, including the colours she never wears for her Christmas Day speech, the the seven outfit changes she goes through in a day.

In a previous book, she also shed light on how she picks all the lovely jewellery she wears on special occasions.

In an extract published by Good Housekeeping, she said, 'In my first book, Dressing The Queen, I went into more detail about her jewellery, and how I make the decisions when offering her jewellery selection.'

As with the Christmas Day speech outfit, everything depends on the colour of the dress, though if you ask us, diamonds go with everything.

She says, 'So, if The Queen chooses a red dress, I wouldn't offer rubies, because they would disappear on the dress, suggesting diamonds instead. If a dark or black dress was chosen, rubies are a beautiful match. If the dress is pale blue I would offer aquamarines or diamonds, or sometimes, just to soften the colour of the dress, I would offer pearls. It all depends on the colour and style of the dress and, of course, the cut of its neckline.'

'Imagine having such spectacular jewellery to wear and knowing the history behind each piece,' she adds.

Yep, we can imagine it's all rather lovely.

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 MoneySavingExpert.com, 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.