Blair Underwood visited 'Regis and Kelly' on Monday and remarked that he had been 20 pounds heavier the last time he appeared on the show.
He said he had been spurred to lose weight after seeing himself on the pilot of his new television series, 'The Event.'
"There's five months between the pilot and the second episode," Blair said. "I saw the pilot and was like, 'Oh brother, you better lose some weight!'"
He said he had gone on the master cleanse, adding, "I basically starved myself for two weeks."
The master cleanse involves subsisting on a mixture of lemon juice, maple syrup and cayenne pepper. Demi and Ashton tried the extreme diet before Demi moved onto the Clean Program designed by Dr. Alejandro Junger with celeb devotees including Giuliana Rancic and Gwyneth Paltrow.