Queen Camilla is "obsessed" with weather apps and "everybody teases her" about it, an author has revealed. Camilla attended a reception at Clarence House today to celebrate the National Literacy Trust's 30th anniversary.

The Queen mingled with bestselling authors and volunteers for the charity, which works to give children and adults of all ages literacy skills.

Among the writers in attendance was Francesca Simon, author of the bestselling children's series Horrid Henry, who shared a joke with the Queen as they discussed the miserable weather.

Ms Simon said: "We were laughing about our mutual love of weather apps. She mentioned it was raining in France, where I'm meant to be today, and I said 'yeah, I know'.

"She said everybody teases her, because I'm also looking at the weather in various parts of the world, and she's the same - so we were laughing at our mutual obsession."

The British are renowned for chatting about the weather, often complaining about the cold or the rain - or even when it's too hot.

The trust ambassador said the Queen's support was "invaluable" to the charity and praised her commitment to the cause.

The author added: "She turns up and puts her passion for reading, which is very genuine, behind it - so it's really fun to have that kind of commitment that's much more than skin deep."

During the event, the Queen, who looked stunning in a long-sleeve navy dress with a white floral pattern smiled and laughed as she greeted the charity's representatives and volunteers before cutting a square anniversary cake decorated with fondant books.

The celebrations were originally set to take place in the gardens of Clarence House but were rearranged for inside the building after the day turned grey and drizzly in London.

Camilla, who is an avid reader, has been a patron of the charity since 2010 and was presented with five books selected by volunteers, including Maya Angelou's Why The Caged Bird Sings and Handle With Care by Shreya Sen-Handley.

Addressing attendees, she paid tribute to the charity's work and said she hoped illiteracy would be "a thing of the past" in the next 30 years.

During lockdown, Camilla launched her Reading Room project which began as an online reading club and has since grown into a major initiative which has a podcast featuring leading authors and a literary festival.

Over the past 30 years, the National Literacy Trust has supported more than five million children with reading and writing skills and worked with nearly 17,000 schools.

In 2023, the charity gifted 528,303 books and is currently campaigning to ensure all primary schools in the UK have a library by 2028.