'Sweetheart' Julia Roberts

Julia Roberts says her role on "America's Sweethearts" appealed to her

(CNN) -- She's been called "America's sweetheart" by the media, and now Julia Roberts -- fresh from winning her first best actress Oscar -- is starring in a film with a similar title.

"America's Sweethearts" tells the story a Hollywood couple (played by John Cusack and Catherine Zeta-Jones) that's broken up, but still must promote a movie together at a press junket. Making things interesting, the film's publicist (Billy Crystal) invents the story that the couple is back together.

VIDEO Actress Julia Roberts discusses her character in 'America's Sweethearts' with CNN's Bill Tush (July 19) Play video (QuickTime, Real or Windows Media)   MORE STORIES • Review: 'Sweethearts' generic from get-go

While Cusack's character is still enamored with his wife, it seems Robert's character -- who happens to be Zeta-Jones' assistant AND sister -- has a thing for her brother-in-law.

CNN Correspondent Bill Tush caught up with Roberts at -- where else? -- the press junket for "America's Sweethearts."