When it comes to the royal brothers – Prince William and Prince Harry – we're pretty used to thinking of them as a twosome (albeit a now estranged twosome), but did you know they also have a step-sister, Laura Lopes, who likes to keep things pretty low-key?

Yep, Laura is the only daughter of Queen Camilla, who is married to William and Harry's father, King Charles III. Meaning that when the couple wed back in 2005, the Princes gained a sister!

Camilla also has a son, Tom Parker Bowles, a food writer and critic, so it's not just Laura who was added into the mix as a step-sibling either.

Here's everything you need to know about Laura Lopes, a lesser-spotted member of the royal family...

cheltenham, england march 12: queen camilla and daughter laura lopes attend day 2 'style wednesday' of the cheltenham festival at cheltenham racecourse on march 12, 2025 in london, england. (photo by chris jackson/getty images)pinterest
Chris Jackson
Laura Lopes pictured with her mother, Queen Camilla, in March 2025 at Cheltenham Races

Who is Queen Camilla's daughter, Laura Lopes?

Laura, who is no longer a 'Parker Bowles' but a 'Lopes', since marrying her husband Harry Lopes, a Calvin Klein model-turned-chartered accountant, back in 2006 (their wedding was where Catherine, Princess of Wales, made one of her first public appearances alongside the royals, no less!).

As for her own profession, Laura has made a name for herself in the art world (something that she has in common with Princess Eugenie, who is a long-standing staffer at Hauser & Wirth art gallery in London).

Everyone's clicking on...

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Antony Jones
Laura (left) pictured with Prince William and Prince Harry at the wedding of Prince Charles and Camilla Duchess of Cornwall (9 April 2005)

Where does Laura Lopes work now?

Laura started her career off by interning at the Peggy Guggenheim Collection in Venice for three months, before taking a turn as a motoring correspondent for the posh folks mag, Tatler. She then went on to manage The Space Gallery in Belgravia (a v swanky part of London) in the mid-00s and co-founded the Eleven gallery in 2005.

On her personal website, it states that Laura is now showing her own work, alongside other artists, at The Barn, Wiltshire.

Who are Laura Lopes' children?

As for family life, Laura and her husband, Harry, welcomed their first child (a daughter named Eliza, who is now 18) in January 2008, and later added to their brood with fraternal twins, Gus and Louis, in late 2009 (they're both 17 now). Adorably, it's been revealed that Eliza, Gus and Louis love referring to Charles and Camilla with the rogue nicknames 'Gaga' and 'Uppa'.

Suggesting that her and William share a strong bond, when Prince William married Kate Middleton back in April 2011, little Eliza took a star turn as a bridesmaid (and looked darn cute in the process):

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Antony Jones/Julian Parker/Mark Cuthbert

Laura and her husband also attended Prince Harry's wedding to Meghan Markle a few years on, and although she isn't regularly spotted out and about with the Princes, she does make a public appearance with her mum, Camilla, from time to time.

See them hanging together here, along with Tom PB, at a Fortnum & Mason event in 2018:

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David M. Benett//Getty Images

And lastly, just to round everything off, please do enjoy a family snap of both Princes, King Charles, Queen Camilla, Laura and Tom. Lovely stuff:

prince william and prince harry pictured with their step siblings, tom parker bowles and laura lopes on their parents' wedding daypinterest
Anwar Hussein Collection/ROTA//Getty Images

So, there we have it – Prince William and Prince Harry's not-so-secret sister!