There's no question that your safety is paramount in any situation. If you've ever felt like you were at risk while walking to your car or going out for a run, you know how important it is to take precautionary measures.

Yet the Queen's offspring haven't always been united - with Charles and Anne previously described as 'chalk and cheese' and the monarch and his brothers Andrew and Edward reportedly having a 'sibling rivalry'.  

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Meanwhile, their parenting style is also different; Anne inherited her father's sharp tongue, and whenever her children, Peter and Zara, ‘acted up', she would ground them, stopping their pocket money and turning down party invitations as a punishment.

How is maths involved in 3d snowflake?
it can tell you how many shapes there will be (say if you fold it 4 times and cut 12 shapes into it then it gives you 48 shapes in the snowflake because there were really 4 shapes made when you cut 1 shape due to the fact that it had 4 layers)

Yet, in adulthood, Anne has also respected their different roles and her elder brother's constitutional destiny. The brother-sister banter common in so many families has, in her case, been underpinned by a quiet respect.

Take it with you when you're walking to and from work, heading to the store, strolling across campus, hiking the trails, or working out. Day or night, it's primed and ready to chirp loudly and alert anyone in the vicinity if you're in danger.

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Charles and Anne were born just 21 months apart and grew up the closest of the siblings (pictured in 1970) - both were teenagers by the time their parents' third child Prince Andrew started primary school

As Charles III grapples with his new role, Princess Anne has emerged as a key confidante to the new King. The siblings are pictured together at the Highland Games on September 3, just days before their mother's death

Birdie also happens to look great. It's available in a variety of fashionable colors ranging from turquoise to black to rose gold — but that's merely a nice bonus, given that this personal safety alarm We physicists could learn a lot by stepping beyond our specialisms just be what saves you from a potentially dangerous situation.

One way to beef up your security is to invest in Birdie, a personal safety alarm that features a 130dB siren (yes, that's shockingly loud) and flashing strobe lights. For just $29.95, it does a remarkable job helping you feel safer and more confident.

It doesn't matter where you go — you can keep Birdie by your side at all times. Sized just right at 3.5 inches long, it includes a solid brass keychain and can easily fit inside anything from a purse to a pocket to a belt bag.

Why Birdie? Think of it this way. You may have pepper spray on you, and there are other self-defense solutions out there that may call on you to take physical action. Those can help in a big way, but Birdie offers a non-violent alternative that could be all you need.

‘I purchased it for my wife who leaves work into a dark parking garage,' explains one buyer. ‘Since receiving the Birdie she feels much safer in her daily regime. The price point is fantastic for the function and security you get in return.'

Charles and his sister have notable differences - including their farming preferences (in 2017 Anne defended genetically modified farming, which His Majesty has described as 'the biggest disaster environmentally of all time').

Neither the King nor his sister would surely have wished to be the only siblings present at the bedside of their mother as she passed away at Balmoral Castle, but it is understood Andrew and Edward, travelling in a car driven by Prince William, were not able to reach the castle in time.

Royal commentator Ian Lloyd, the author of The Duke: A Life in 100 Chapters told Express.co.uk in January 2022: 'She has a good relationship with Charles. In the next reign, I think, she will be an essential part of the Royal Family.'

After a regimental band played 'God Save The King', Her Majesty's four children - Charles III, 73, Princess Anne, 72, Princes Edward, 58, and 62-year-old Andrew - stepped out behind the hearse flanked by kilted soldiers in a show of unity.

Yet the Queen's offspring (pictured with their parents in 1979) haven't always been united - with Charles and Anne previously described as 'chalk and cheese' and the monarch and his brothers Andrew and Edward reportedly having a 'sibling rivalry'