Princess Beatrice and Princess Eugenie are set to be featured in a magazine.

Prince Andrew and Sarah Ferguson's daughters will be following Princess Diana and Kate Middleton's footsteps as they join the British Vogue family. The royal sisters will be featured in the publication's September issue.

"Essentially, we are taking you on a journey – from our offices in central London, where I invited Bajan superstar Rihanna earlier this summer to talk diva-dom and diversity, to Royal Lodge in Windsor, where Princesses Beatrice and Eugenie welcomed Vogue into the heart of the Royal family," Edward Enninful, editor of British Vogue, said in a letter (via Express).

Although Princess Eugenie and Princess Beatrice will be featured in the magazine, there's a crucial difference. The princesses will not be on the front cover, which will show Rihanna.

Meanwhile, Middleton and Princess Diana appeared on the front covers when they were featured in the magazine. The Duchess of Cambridge graced the Vogue cover for its centenary issue in 2016. On the other hand, the late Princess of Wales starred on the front cover in 1991.

This is not the first time for the next royal bride to appear in a magazine. Princess Eugenie was also Harper's Bazaar in 2016. In her interview with the magazine, the Princess of York shared her fitness routine.

"I get up around 6:45 to start exercising by 7," Princess Eugenie said. "I go to the park from 7 to 8. I do circuits, which I love because they're quick: burpees, squat jumps, lunges, the whole lot. It's much better, as I can't run for a long time. Or I go with my best friend to this amazing, women-only gym called Grace Belgravia. If I need to pick up some groceries, I go to Waitrose, right next to my gym."

Princess Eugenie's apparent weight loss months ahead of her royal wedding was praised by fitness experts. Many of them are convinced that she did it in a healthy manner.

"Princess Eugenie seems to have lost weight in a healthy fashion. Her skin is glowing, she looks fitter and more toned – she's clearly put the work in," Daria Kantor, the founder and CEO of TruBe told Express.