In 1972, Jeannette Charles was in her mid-40s and settling down to life in an Essex village, having returned, with her husband, Ken, from Libya. They had been living there for some years, but left following the army coup led by Muammar Gaddafi.

On reading about the artist Jane Thornhill in a local newspaper, Charles decided to commission a painting of herself for her husband’s birthday. Thornhill asked whether she could submit it for the Royal Academy’s summer exhibition in London, but when she did, the venerable institution returned the picture, believing it to be a portrait of Queen Elizabeth II and having been told by Buckingham Palace that the monarch had not sat for it.

The resulting publicity began a new chapter in the life of Charles, who would spend the next 40 years as the Queen’s most famous lookalike, and who has died aged 96. She appeared on British television and in Hollywood films, alongside stars such as Leslie Nielsen, Priscilla Presley and Mike Myers, and also modelled for Spitting Image when the satirical TV show was making the Queen’s puppet.

Charles said of her uncanny resemblance to the monarch, whom she never met: “We both have the same bone structure, so the same style of makeup and hairdressing suits us best. But I’m 2 inches shorter than her, so my clothes wouldn’t always look well on her and vice versa.”

She also made personal appearances – opening shops, handing out gifts with the flamboyant piano virtuoso Liberace and presenting a silver disc to the rock group Queen – and Muhammad Ali put in a special request to have a photograph taken with her. Commercials kept her busy, too, but Charles insisted: “I am not an actress. I only do the one role.”

Her first job as the Queen was posing for a London Weekly Advertiser poster that featured her reading a paper, with a stuffed corgi at her feet. However, London Transport, which was due to display it on buses and Tube trains, objected and never used it. Charles said it was a lesson: “too real … a little vulgar”. She insisted she was a staunch royalist, and told the Guardian in 2022: “I would never do anything that reflected badly on the monarch or myself. Over the years, I’ve turned down large sums to pose for Page 3-type pictures and insisted I should never be introduced as the Queen when making appearances.”

Jeannette was born in London, 18 months after Princess Elizabeth, to Yetta (nee Wonsoff), who was Dutch, of Polish descent, and Alfred Clark, a chef, later restaurateur, and was brought up in Perivale, Middlesex. Her resemblance to the future monarch was spotted when she was still a child. She recalled: “On a trip to Greenwich when I was 11 or 12, a photographer asked if he could use me in some shots, saying, ‘She looks like Princess Elizabeth.’ Later, I’d draw crowds, especially abroad, and sometimes had to run away.”

After leaving Wembley high school, she took a job as a secretary and spent evenings acting with an amateur group in Acton. She dreamed of acting professionally, and passed an audition to train at Rada, but could not afford the fees. Instead, she emigrated to the US at the age of 24 and settled in Midland, Texas.

While working there as an au pair, she met Ken Charles, a British oil drilling engineer with BP. His work took him to Canada – where they married in Alberta in 1957 – and then to South America and Libya.

They returned to Britain in 1969 and, when regal fame came to Charles, she found herself travelling the world again. At home, her early screen appearances were in the sketch shows Rutland Weekend Television (1975), with Eric Idle and Neil Innes, Spike Milligan’s Q series (from 1976 to 1980), and Not the Nine O’Clock News (1980). She was also in sitcoms such as Mind Your Language (1978) and Never the Twain (1990), and jetted to the US for a 1977 appearance on Saturday Night Live.

When Hollywood came calling, she put on the royal tiara to appear in National Lampoon’s European Vacation (1985). In The Naked Gun: From the Files of Police Squad! (1988), she was seen flat on her back with Nielsen on top of her as they slide down a royal banqueting table – when his inept detective believes the Queen is about to be assassinated and jumps to her rescue. For Charles, another highlight of filming that wacky movie was being invited to Presley’s trailer for lunch. “We became good friends,” she said.

She was back in Hollywood for The Parent Trap (1998), with Lindsay Lohan, Dennis Quaid and Natasha Richardson, and Austin Powers in Goldmember (2002), when she mistook its star, Myers, for a crew electrician on first meeting him.

Alongside chat shows, corporate events, fete openings and other appearances, she appeared in Motörhead’s music video promoting their version of the Sex Pistols song God Save the Queen in 2000.

Charles’s autobiography, The Queen & I, was published in 1986.

Her husband died in 1997. She is survived by their three children, David, Peter and Carol, and her sister, Delinda.

• Jeannette Dorothea Louise Charles, lookalike, born 15 October 1927; died 2 June 2024