Princess Eugenie need not follow every royal protocol, but Meghan Markle has to.

According to Isabella Sullivan, a journalist for Daily Express, the youngest daughter of Prince Andrew and Sarah Ferguson is not a "working royal." As such, Princess Eugenie "doesn't have to follow many royal rules."

Among the rules that Princess Eugenie need not stick to is maintaining an Instagram account. The next royal bride is among the only few royals who have a personal account on social media. She usually shares her whereabouts and posts throwback family photo on her feed.

Meanwhile, Markle was not allowed to do the same. The former "Suits" star used to maintain a blog, The Tig. She was also active on Facebook, Instagram and Twitter. However, Markle opted to delete her accounts on those social media networks after she started dating Prince Harry.

In January, Kensington Palace explained why the Duchess of Sussex opted to delete her social media accounts. According to the palace, Markle "is grateful to everyone who has followed her social media accounts over the years." However, Markle decided to delete them because "she has not used these accounts for some time."

Aside from this, Princess Eugenie is free to paint her nails with dark colors. Kate Middleton and Markle are prohibited from using dark and colorful hues and only uses natural nail polish.

On the other hand, the Princess Beatrice's sister has been seen experimenting with extreme nail arts. In 2012, she was spotted with a Union Jack manicure while watching Epsom Derby. In 2015, Princess Eugenie caused a stir with her deep red manicure with different festive designs at the Buckingham Palace annual Christmas luncheon.

Princess Eugenie is not a working royal, but she has a full-time job. She works as a director at Hauser & Wirth, a contemporary art gallery in Mayfair, London. Princess Eugenie has been working at the gallery since 2015 as an associate director. She was promoted to the position of director in 2017. According to the royal, she always knew that she belongs to this industry.

"I've loved art since I was very little. I knew I definitely wouldn't be a painter, but I knew this was the industry for me," Princess Eugenie said.

Princess Eugenie
Princess Eugenie doesn't need to follow every royal protocol unlike Meghan Markle. Pictured: Princess Beatrice and Princess Eugenie take part in the Royal Parade during Royal Ascot Day 3 at Ascot Racecourse on June 21, 2018 in Ascot, United Kingdom. Getty Images/Leon Neal