Brad Pitt has arrived with Angelina Jolie at the global summit to End Sexual Violence in Conflict.
The Hollywood couple - with Foreign Secretary William Hague standing between them - posed for the large press pack at the ExCeL exhibition centre in London's Docklands.
The coming together of an "unlikely double act" - Angelina and Mr Hague - is an example of how foreign policy should be conducted in future, the Foreign Secretary said while attending the summit.
The Maleficent actress, who is special envoy for the UN High Commissioner for Refugees, was dressed in an entirely black outfit, having been in white for the first two days of the event.
Reminiscent of their matching outfits at this year's Bafta awards, her tuxedo-style jacket and trousers was similar to Brad's dark suit.
Brad, who starred alongside Angelina in Mr And Mrs Smith, was also wearing dark-rimmed glasses.
The combination of Angelina's star power along with government could be "formidable", Mr Hague said previously. He also said the film star was "a pleasure to work with".
He said: "My admiration for her work has grown even greater over the last two years.
"She has the power to speak to the whole world, to raise awareness, change attitudes.
"Governments like the one I am a member of hold in their hands levers of decision making and action.
"And this combination can be formidable.
"And is in many respects a strong example of the future of foreign policy and how it should be conducted.
"It's no longer the sole preserve of governments."
He said Angelina brought "vast expertise", adding: "She is an inspiration."
Angelina and Mr Hague are co-chairing the four-day global summit to End Sexual Violence in Conflict (ESVC) - now in its third day - and have launched an international protocol which they hope will "really, truly end impunity".
At an event this morning where the Hollywood star and Conservative politician both spoke, Brad looked on from the front row.
Baroness Warsi, who was sitting in the row behind the Hollywood heartthrob, was heard joking with one woman before Brad took his seat: "This is Team Hague."
In her speech, addressing delegates and officials from all over the world, Angelina said: "We are here for the nine-year-old girl in Uganda, kidnapped and forced into sexual slavery.
"We are here for the man in Bosnia, years after rape, still stigmatised, unable to earn enough money to buy bread for his family.
"We are here for all the forgotten, hidden survivors who have been made to feel ashamed or been abandoned.
"And for the children of rape - we want the whole world to hear their stories and understand that this injustice cannot be tolerated, and that sorrow and compassion are not enough."
The audience was shown short film clips featuring the hashtag #TimeToAct, which is now trending on Twitter.
Also present at the event is human rights lawyer Amal Alamuddin, who has become engaged to Brad's friend and fellow pin-up George Clooney.
The Oxford-educated barrister, who has represented WikiLeaks founder Julian Assange, has been described as a "passionate defender of human rights".