Angelina Jolie, along with her fiance and long-time lover, Brad Pitt, returned to the public eye for the first time since she had a preventive double mastectomy earlier in the year. She and Mr. Pitt appeared at the London premiere of his new film, World War Z, earlier on Sunday, June 2.

Jolie looked beautiful and radiant, according to reports by US Weekly. She was wearing a custom Saint Laurent floor-length black gown with sheer cutouts that exposed her toned stomach. She smiled demurely as she posed with her longtime love, who dressed for the occasion in head-to-toe black.

"I feel wonderful!" Jolie told US Weekly at the premiere, held in Leicester Square at the Empire Cinema. "It's Brad's night."

Jolie has kept a low profile since revealing her mastectomy in an essay for the New York Times last month. Writing about her decision to undergo the procedure, she said she wanted to "be proactive" and "minimize [her] risk" of breast cancer after learning that she carries the BRCA1 gene mutation

Her husband to be, Pitt is also one of the biggest movie stars in the world.

It's incredible to be here in London," said Pitt. "We love it here."

Noting that she was "happy" with her decision, Jolie explained that her chances of developing the disease had decreased from 87 percent to 5 percent. "I can tell my children that they don't need to fear they will lose me to breast cancer," she wrote.

Following her double mastectomy, the mom of six had breast reconstruction surgery using implants. "There have been many advances in this procedure in the last few years, and the results can be beautiful," she explained in her Times op-ed. 

Her children can vouch for that. "It is reassuring that they see nothing that makes them uncomfortable," she wrote. "They can see my small scars and that's it. Everything else is just Mommy, the same as she always was."

"I do not feel any less of a woman," she added. "I feel empowered that I made a strong choice that in no way diminishes my femininity," she told US Weekly.