- G7 summits
Carrie Johnson will take on a key role hosting the spouses of world leaders at the G7 summit in Cornwall this weekend.
It will be the first major public event for Mrs Johnson since she married the prime minister in a secret ceremony last month.
At 33, she is the youngest of the partners, but will not be the only G7 rookie among the world leaders and their entourages.
Other first-timers include US First Lady, Dr Jill Biden, Mariko Suga, the wife of Japan's prime minister, and Maria Serena Cappello, the wife of the Italian prime minister, Mario Draghi.
And while the full itinerary has not been released, details of Saturday night's BBQ on the beach in Carbis Bay have been revealed.
Guests will tuck into scallops, Curgurrell crab claws and Portscatho mackerel, followed by sirloin and Newlyn lobster.
Afterwards, the leaders will be able to have baked brie, hot buttered rum and toasted marshmallows around firepits on the beach.
A chance for leaders and their entourages to mingle – so who are the spouses and partners of the world leaders?
Carrie Johnsonimage copyrightRebecca Fulton/Downing Street/PA Wire image captionBoris Johnson and Carrie Symonds in the garden of 10 Downing Street after their wedding
Fresh from her nuptials, Mrs Johnson has what might appear at first glance to be a daunting task – keeping the plus ones happy and entertained while their partners discuss the world's problems.
A political tightrope to tread but one that Carrie Johnson should be well-suited for, with political nous honed over the years at Conservative Campaign Headquarters and more recently, in the world of conservation and political PR.
Reports suggested Mrs Johnson and First Lady Jill Biden were due to have a tour of the St Michael Mount, off the coast of Cornwall, while the leaders discussed issues including Brexit, the coronavirus pandemic and climate change on Thursday.
A No 10 source confirmed the visit to Saint Michael's Mount was "sadly off due to the weather".
But in the coming days, seaside photo-ops in Poldark county with visits to the Cornwall beauty spots, St Ives and Penzance, are all possible.
Given Mrs Johnson's passion for the environment and conservation, Cornwall's 400 miles of coastline should offer the ideal background for her debut.
Jill Bidenimage copyrightEPA
At 70, the US First Lady, who has spent decades working as a teacher, is Mrs Johnson's senior, but she too is a novice on the G7 stage.
The summit marks the first time the Bidens have been on an overseas trip together since he took office in January and this one will be crowned with a visit to the Queen at Windsor Castle on Sunday.
On Thursday, Dr Biden said that she and her husband were looking forward to meeting the Queen, and that the couple hoped to focus on education in their discussions with the royals.
"We've looked forward to this for weeks and now it's finally here. It's a beautiful beginning," she added.
If the environment is Carrie Johnson's passion, then education is Jill Biden's.
The President has described her as America's "favourite educator", and the First Lady herself has tweeted that teaching is "not what I do. It's who I am."
As well as a bachelor's degree, she has two master's degrees, and a doctorate of education from the University of Delaware in 2007.
Advocating for military families and raising awareness about breast cancer prevention are other subjects close to her heart.
Brigitte Macronimage copyrightAFP
France's leading lady, Brigitte Macron, has more experience than most of her counterparts of life at the top and she has made no secret of how difficult it can be.
In comments made to French media after her husband was elected in 2017, she said it was difficult to find peace and quiet on the job, telling French media "what I do not like is that there is never [any] time off" and "wherever you are, there is always someone to take your picture".
There is a 24 year age gap between Mrs Macron and her husband Emmanuel – she is 68 and he is 43.
She may find common ground with Jill Biden: Ms Macron was also a teacher – in fact, she taught her future husband drama when he was 15.
She is no stranger to headlines from meetings with foreign leaders, most notably after the former US President, Donald Trump, described her as being "in such good shape" on a visit to Paris in 2017.
Sophie Trudeauimage copyrightReuters
The Canadian prime minister's wife, Sophie Trudeau, will be hoping this trip is less eventful than her visit to London in March 2020.
She hit the headlines for becoming one of the most high-profile figures to test positive for coronavirus after returning home and her husband has since stressed the importance of holding Covid-secure events.
She has spoken out publicly about her battle with bulimia from her late teens to her early 20s.
She worked in PR before becoming an entertainment reporter on Quebec TV station LCN.
Justin Trudeau was the first world leader to congratulate President Biden by phone after he was declared winner of the presidential election, and received the new president's first call with a world leader after his inauguration.
So we can expect to see Sophie Trudeau keen to cement the relationship between the two countries.
Mariko Sugaimage copyrightJIJI PRESS
Mariko Suga is the wife of the Japanese prime minister, Yoshihide Suga and another G7 first-timer.
Mr Suga took power less than a year ago after Japan's longest-serving prime minister, Shinzo Abe, resigned for health reasons.
Ms Suga has rarely spoken in public but has been described as a devoted supporter of her husband behind the scenes.
Japanese media has portrayed her quiet demeanour as being in stark contrast to that of her predecessor, Akie Abe, who was viewed as a socialite, posting frequently on social media about meeting celebrities and other public figures.
Maria Serena Cappelloimage copyrightReuters
The Italian prime minister's wife is another newbie on the G7 scene, despite being married to Mario Draghi for half a century.
She is often referred to in Italian media as "the invisible wife" because so little is known of her personality or political views.
But a profile for Italian Vanity Fair earlier this year revealed a passion for both English literature and dogs – so pairing up with Jill Biden or discussing the behaviour of Dilyn, the Downing Street Jack Russell, should go down well.
Joachim Sauerimage copyrightReuters
Last but not least is the outgoing German Chancellor Angela Merkel's husband, Joachim Sauer.
This is the couple's last major international summit together before Ms Merkel leaves office later this year.
As the only male spouse, he will find himself in a similar position to Theresa May's husband Philip, who had the accolade of being the only husband at the G20 world leaders' meeting in Kyoto in 2019.
A quantum chemist and professor of physical and theoretical chemistry, Mr Sauer never speaks to the media and only rarely appears in public with his wife.
He skipped her inauguration in 2005, preferring to watch the event on TV at his Berlin university.
A German newspaper once said he was as "invisible as a molecule".