Bibb got in on the ground floor of the Marvel Cinematic Universe when she played reporter Christine Everhart in 2008's "Iron Man."
Tony Stark (Robert Downey Jr.) seduces Everhart after she tries to interview him for Vanity Fair magazine, an interaction that helps set up both Stark's genius and his flippant, playboy attitude toward the potential consequences of his actions. The next morning, she wakes up alone in his home in Malibu, until she is greeted and dismissed by his assistant, Pepper Potts (Gwyneth Paltrow).
Later in the film, she confronts Tony with evidence that Stark Industries weapons have been used to attack a village in Afghanistan, leading Tony to take his new and improved Iron Man suit into combat for the first time. Finally, she appears in the movie's last scene, interrupting Tony's pre-planned press conference address to express skepticism about the idea that Iron Man is one of Stark's bodyguards in his own suit, which leads Tony to close the film with the iconic "I am Iron Man."
Bibb reprised her role as Everhart in both "Iron Man 2," where she appears with Tony's rival, Justin Hammer (Sam Rockwell), and in the web series "WHIH Newsfront," a faux-news series purporting to cover politics, current affairs, and business in the Marvel Cinematic Universe.