VIDEO : Carrie Underwood Sizzles, Shows Off Legs for Days at Apple Music Festival

Carrie Underwood was one sexy sight during the Apple Music Festival at the Roundhouse in London Monday night, showing off her never-ending legs in a super hot ensemble that still has jaws on the floor. She accessorized the look like a rock star, adding a pair of black leather gloves, high-heeled boots and, of course, an Apple watch. Meanwhile, the new mom?who gave birth to her son Isaiah Fisher in March?also had an exciting moment earlier this month when she debuted her fitness line Calia at New York Fashion week for the first time.