According to royal etiquette expert Myka Meier, women in royal families aren't allowed to be too "sparkly" on a day out. For this reason, Kate is only allowed to wear diamonds after 6 pm.
Legs and knees must be kept together, which means crossing at the ankle is fine. Kate's go-to position was previously dubbed "the Duchess slant," where she keeps her knees and ankles tightly together and slants her legs to one side.
Kate and the rest of the royals must use their thumb and index finger to hold the top of the handle, while the middle finger should support the bottom. They also should sip from the same spot so the entire rim doesn't have lipstick stains. And never — never! — pinkies out.
And now we've discovered another rule the royals have to follow - and it's all to do with their bedtimes. According to Sir William Heseltine, one of Queen's private secretaries, when staying with Her Majesty, members of the royal family should wait until the Queen retires to bed before they also hit the hay.
O'Grady spoke about how Queen Elizabeth was never a fan of McDonald's or KFC but did in fact have a hankering for one kind of fast food in particular. The food? Hamburgers. Yes, Her Majesty was similar to the majority of the population in the sense that she loved a hamburger just as much as the next person.
Does Kate Middleton go to bed early? The Duchess of Cambridge has previously revealed she goes to bed at 10.30pm every night, in order to maintain sleep hygiene and a consistent routine, meaning that it's easier for her to nod off.
"Without William, Kate would curtsy to Camilla; with him, she would not," the source continued. "That's unless Prince Charles is present, in which case she would." The order of curtsying, however, can change. This could happen when people marry into the family.
What is the royal bedtime rule? According to Sir William Heseltine, a former private secretary to the Queen, Kate and Meghan will now have to follow the family rule when it comes to bedtimes at the Queen's residences - not going to bed before the Monarch herself. That's right.
Although there is no formal law that forbids future monarchs from showing affection, Queen Elizabeth II set a precedent that encouraged royals to keep their hands to themselves. This is why you rarely see Prince William and Kate Middleton smooching in public, or even holding hands.
It's becoming more common for royals from around the world to get tattooed. Britain's Princess Eugenie showed off a tiny circle tattoo behind her ear at a royal event in June. Meanwhile, Princess Sofia of Sweden showed her back tattoo of a sun symbol on her wedding day.
Members of the royal family are rarely seen using cell phones in public, and that's because protocol dictates that nobody should turn their back to the Queen.
In fact, Kate Middleton is said to enjoy relaxing after a long day by cooking for her family. The Princess often prepares dinner for husband Prince William and children Prince George, Princess Charlotte and Prince Louis.
Kate's daily routine: school run, food shop, gym
Regularly dropping the children at school and doing the daily food shopping on nearby Kensington High Street, the duchess also prefers to swap the indoor gym at the Palace for runs in Kensington Gardens.
Kate is a “working royal” but does not earn a salary. When not raising her three children, her day-to-day schedule is filled with official engagements where she represents the family and monarchy along with her husband. Although she has no income, per se, Middleton has few expenses.
Now that Kate is the Princess of Wales — and Camilla is queen consort — the greeting rules have changed among the royal women. All must curtsy to Camilla. And, since Kate is Princess of Wales, Meghan must curtsy to both Kate and Camilla, per Page Six.
2. Will Kate Middleton be Called 'Queen'? Not really. If everything goes as planned, the Princess of Wales will likely receive the title of queen consort.
The same applied to Meghan Markle - the Duchess of Sussex had to curtsy to everyone when alone, but didn't have to bow before Beatrice and Eugenie if she was with Prince Harry. According to a source, the royal women not only curtsy to one another in public, but from the comfort of their own homes too.
How size 4 Kate Middleton got THAT incredible 24 inch waist - even after three kids. SHE may have three kids and a hectic schedule, but Kate Middleton has managed to maintain an enviable 24 inch waist over the years. Although she has proudly showed off her baby bumps during her pre…
What Kate called the Queen. While the rest of the world is required to address Queen Elizabeth as Ma'am or your majesty, those closest to her are allowed to refer to her as Mama, according to Ingrid Seward, the editor of Majesty magazine. Sign up to British Heritage Travel's daily newsletter here!
The Duchess' clothing is paid for by the Duchy of Cornwall.
The former royal chef revealed the Queen loves chocolate!
"For a first course she loved the Gleneagles pâté, which is smoked salmon, trout and mackerel. She loved using ingredients off the estate and so if we had salmon from Balmoral from the River Dee, she'd have that, it was one of her favourites.
Yes, the late Queen Elizabeth II really did get the occasional takeaway! According to The Sun, the former monarch was rather partial to fish and chips and sometimes treated herself to dinner from the local chippy when staying at Balmoral. A footman was reportedly sent to pick up her meal from nearby town Ballater.
And as to putting one's clothes on, contrary to popular belief the Queen actually dressed alone. The monarch also did her own make-up for most events, with the exception of her annual Christmas speech, for which a make-up artist was employed.