The veteran actress won an Oscar for her portrayal of Britain's monarch in 2006 movie The Queen, and they came together for a second time at a reception in the British capital to celebrate young people in the performing arts.
Mirren, who previously met the ruler at Britain's Royal Ascot racecourse in 2008, wasn't the only celebrity guest in attendance - Welsh singer Duffy, rapper Goldie and actress Sheila Hancock also appeared at the gala hosted by the Queen and her husband, Prince Philip, Duke of Edinburgh.
The Queen star has been acting for more than 40 years but admits she's ready to retreat to Puglia in Italy, where she and her husband, director Taylor Hackford, own a property.
Mirren, who turns 66 in July (11), struggles to keep up with the physical demands of shooting films and insists she can't wait to embrace the quiet life.
She tells Britain's Daily Express, "Making movies is a young person's game because it's exhausting. Your energy has to be up all the time. We did 15-hour days every day so your whole body is constantly moving around. It was really hard work.
"We are finishing a house in Italy so I hope to spend some time there. I'll make some horrible clothes for myself, because I love dressmaking but always make horrible things.
"I've reached a point in my life and career where I'm not dissatisfied any more. I'm not looking for something else so I can simply enjoy the rest of my life. I haven't had a break for as long as I can remember. I've worked so hard and I really want to have a substantial holiday."
The British royal will wed his bride-to-be at London's Westminster Abbey on Friday (29Apr11) in a lavish ceremony which will be broadcast all over the world.
Mirren admits she feels sorry for the young couple and hopes they exchange vows behind close doors in a second, secret ceremony.
She tells Britain's Mail on Sunday, "I know this sounds ridiculous, but I think people getting married should be a private thing. I hope they will also do an absolutely private wedding just for them."
In the short film, Crystal and When Harry Met Sally director Rob Reiner try to pitch a sequel to the 1989 movie to three young movie executives.
But in the update, Meg Ryan's character, Sally, is dead! And Helen Mirren plays Crystal's aunt.
The sketch is a true family affair - Crystal's son-in-laws wrote it and it also features his other daughter, Jennifer Crystal.
The skit debuts in the U.S. at midnight on Tuesday (05Apr11).
The As Good As It Gets star portrays Cheri Hamilton in the Bethany Hamilton biopic and admits she spent much of the film trying to get the young surfer's mum to hit the waves again.
Hunt says, "Her mother was a big wave surfer in Kauai in the 70s and she had not gotten back in the water since this happened to her daughter and I brought her back in the water."
Frost is developing a script which revolves around Marple as a 30-something crime solver.
No casting has been announced.
Miss Marple has been played on the big and small screen by British actresses Angela Lansbury, Joan Hickson, Margaret Rutherford, Julia Mackenzie and Geraldine McEwan and American star Helen Hayes.
The only actress to play a young Miss Marple is Julie Cox, who played the detective in 2004 TV movie Marple: The Murder at the Vicarage.
The comedian-turned-actor plays jester Trinculo in filmmaker Julie Taymor's upcoming big screen adaptation of Shakespeare's The Tempest.
Brand relished reciting his difficult lines for the film, but admits he struggled to understand the Bard's work as a teen - and wishes his tutors had emphasised Shakespeare's risque and exciting themes.
He tells U.K. TV show Daybreak, "In British schools, they sort of thrust it upon you. I had some good teachers in my school, I don't want to bring my school down, but (when) Shakespeare is presented to you, it just seems dense.
"(It could be enjoyable) if they said to you, 'This about sex and violence and in the times that it was on, it was a very bawdy form of entertainment! You could go to a public execution or see a Shakespeare play!' It's not meant to be read, it's meant to be performed."
And Brand hopes Taymor's take on the drama will get audiences excited for Shakespeare again.
He adds, "Julie's done such a great job of making it visceral and impactful (sic), making the funny bits funny and the dramatic bits intense.
There's really good-looking kids in it, Reeve Carney, for example, the young lad in it. He's gorgeous, and the girl he's opposite, Felicity (Jones) - they have the qualities that the Twilight stars have. And you've got the gravitas of Dame Helen (Mirren). She's so cool. I'm infatuated with her - to a healthy degree."
The Queen star grew up in Southend-on-Sea, England, a seaside town where there was a regular influx of students from France who travelled to the U.K. to study.
And she admits she spent hours brushing up on her language skills - so she could charm one of the pupils.
Dame Helen tells U.K. talk show host Graham Norton, "There was always this coterie of French students who'd come to learn English and I was a complete francofile. I thought everything French was so cool and smart and elegant. I was desperate to get a French boyfriend and I did - Jean-Louis."
And the Brit reveals she's actually still in touch with her teenage boyfriend, adding: "Thanks to the internet, brilliantly, the brilliant, wonderful internet, very recently, I thought, 'I wonder where Jean-Louis is. I'll never find him.'
"I googled him, bang! He came up immediately. I sent him an email and within 24 hours, I was back in touch with him. It was amazing! This was like 40 years later. (Jean-Louis) wasn't saucy, he was very, very well-behaved and Catholic."
UPDATE: The project has officially been greenlit, though none of the stars are attached to return. So, woo?
Looks like Summit Entertainment thinks the world needs a little more old men and women with big guns teaching all these young ‘uns how they used to do it back in the day.
The studio has commissioned Red’s original scribes Jon and Erich Hoeber to pen a sequel and if it likes the script then they may go along with the follow up. Of course, the film would need its original cast back, which means fatter pay checks for Helen Mirren, Bruce Willis, John Malkovich, and Mary-Louise Parker. What’s that? Why didn’t I mention Morgan Freeman? BECAUSE HE DIED IN THE MOVIE. Oh yeah, spoiler alert.
And, this being a sequel means the producers are going to have to up the number of old people with guns. May I make a few suggestions? Geoffrey Rush with a bazooka. The guy Leonerd from Community (Richard Erdman) with ninja stars. Judi Dench with a katana. More of Mary-Louise Parker doing the possibly NSFW pie baking thing seen here. Just no damn Betty White!
The An Education star was initially cast as the young female lead, Rose, in the picture, but dropped out to concentrate on Wall Street: Money Never Sleeps.
Rising star Andrea Riseborough replaced Mulligan, but investors feared the film would not be able to pull in cinema audiences without a big name attached, and they threatened to drop out of funding the production.
Director Rowan Joffe set out to cast a famous face - and he was relieved when Mirren stepped in to play the older female lead, Ida.
He tells Britain's Telegraph magazine, "(Mulligan) walked off to go and do Wall Street: Money Never Sleeps, which is a perfectly respectable decision. She had to do what she thought was right. But that did cause us some quite serious problems.
"(Mulligan's departure) seriously damaged the investors' confidence in the project. (Distribution company) Studio Canal and (co-producers) Optimum Releasing were very supportive, but they basically said, 'The movie isn't happening unless you land us a name'. It was teetering on the brink.
"(I) went hell for leather in pursuit of Helen Mirren, whom I'd always imagined as an Ida, but who hadn't been available to play the role initially. And thank goodness she was available to shoot the movie. Because that, in a sense, did greenlight us."