Cowell told Oprah Winfrey on Monday's episode of "The Oprah Winfrey Show" that his money is on Lambert because the contestant is fearless, unique and "he's got swagger."
Winfrey also featured Scottish singing sensation Susan Boyle, who is competing on "Britain's Got Talent." Boyle told Winfrey she's "loving every second" of her newfound fame.
The 47-year-old Boyle became famous after she shocked judges and the audience with her version of "I Dreamed a Dream" from the musical "Les Miserables."
One of those judges was Cowell, who congratulated Boyle and wished her "best of luck" in the rest of the competition.