Brad: Angelina Will Be Here For a Long, Long Time

Brad: Angelina Will Be Here For a Long, Long Time

After six years in the making and an unprecedented budget, a proud Brad Pitt was on the red carpet to premiere his end-of-the-world action-filled drama World War Z in London. And while the completed project that was once riddled with re-writes and re-shoots was reason enough to celebrate, the Oscar nominee found another reason to smile as his partner Angelina Jolie gracefully took his side in her first official appearance since news of her double mastectomy.

Angelina Jolie: "I Feel Wonderful"

"I'm just happy she's going to be here for a long, long time," said Pitt, 49. "The lovely thing is that life goes on and we don't have that specter hanging over us anymore. We don't have to fear that anymore. It was a brave act to do and undertake and a brave act to share that story."

Admiration for the Girl, Interrupted actress, 37, who braved the fan-filled soiree didn't end with her partner of eight years. The object of Pitt's affection in the doomsday drama, Mireille Enos, who plays Karen Lane, also sang praises for the talented power-couple.

"Working with him is just wonderful. He's such a down to earth, hardworking guy and they are just so beautiful together," Enos swooned.

And though Jolie's arrival was gladly the talk of the evening, it did not overshadow the man of the hour, Pitt himself, who garnered plenty of acclaim and adoration from fans and co-stars alike.

"It's really hard to get a good angle on him," joked director Marc Forester of Pitt's boyish good looks before being interrupted by an eruption of screams of delight amid an announcement that Pitt and Jolie had arrived. "It was just fantastic to work with him. He's one of the most gifted, iconic actors."

"He's an amazing star, and he's a great guy and he's a great actor also. And working with a generous, talented actor like him is just amazing," said Dutch film producer Ludi Boeken.

He added, "[In] one of my scenes, one old man fell down and it wasn't in the script, but Brad just went and picked him up and helped him. People thought it was part of the scene, but it wasn't…he just did it. He's like that," Boeken said.

From on-set to on-screen, Pitt's heroic instinct no doubt easily extended to his film persona, Gerry Lane, a former UN employee who is tasked with single-handedly taking on an apocalyptic zombie invasion in the horror-film based on the Max Brooks novel of the same name and sequel to the popular book, The Zombie Survival Guide.

The cinematic feat takes audiences across continents as Lane takes the fate of the world in his hands traveling from country to country battling the living dead and seeking a solution. In real-life, the film has been gathering international acclaim for it's grandiose undertaking and special effects -- making it the most expensive film in cinematic history.

"I forgot to breathe during the movie, congratulations," a still shaken ET's Rocsi Diaz tells Pitt. "It's the most intense film you'll see all summer. It took a long time for us to get it here. It's a big, big, massive movie... It's an international story. It should be really good summer fun," he says.

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Despite the international success the movie has met so far, as a proud papa of six--Pitt grins the biggest smile after revealing  the review of his "toughest critics" -- his children. The verdict? "Two thumbs up." 

For more red carpet interviews, check out the video above.