Brad Pitt and Angelina Jolie come out in force at London rape summit
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, wore dark-rimmed glasses.
The combination of Angelina's star power and 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."
Jolie 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, Pitt 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 Pitt took his seat: "This is Team Hague."