This cover image released by People shows actress Gwyneth Paltrow on the cover of a special double issue. The 40-year-old actress tops the magazine's annual list of the "World's Most Beautiful," announced Wednesday, April 24, 2013. Paltrow stars in the upcoming film, "Iron Man 3," out on May 3. The issue is available on newsstands on Friday, April 26. AP Photo/People Magazine LOS ANGELES (AP) - Gwyneth Paltrow says she's thrilled to be picked by People magazine as "World's Most Beautiful Woman" for 2013 but it's "obviously not true." Paltrow questioned her own selection as she walked the red carpet at the Hollywood premiere of "Iron Man 3" Wednesday night. It's funny, these things, because it's like obviously not true. But it's very sweet to be named that," Paltrow told The Associated Press. Because I mean you can't say that, you know! But it's been wonderful. It's been very wonderful. And as my friend said, it's so nice that someone who has kids and is a mom and is not like 21 is named that. It's really an honor. Paltrow said her two children weren't aware of the news in this week's edition of the magazine, but she'd been getting plenty of congratulatory emails from friends and family. The 40-year-old actress stars as Pepper Potts, Tony Stark's love interest and assistant-turned-business partner in the "Iron Man" trilogy. Her co-stars in "Iron Man 3" praised People's proclamation. Completely justified. She's gorgeous," said Guy Pearce. Let me tell you: She is as gracious and beautiful inside as she is outside. She's got a good heart. A lovely girl," said Ben Kingsley.