Katharine McPhee Begins Filming 'Scorpion' Just a Day After Casting News Breaks!

Katharine McPhee wears her waitress costume as she walks around the set of her upcoming CBS pilot Scorpion on Tuesday (March 18) in Los Angeles.

News just broke that the 29-year-old actress would be taking on the role of “Paige, a working-class hero and diner waitress who understands geniuses who becomes a nanny of sorts and translator for eccentric genius Walter.”

Be sure to mark your calendars! Katharine‘s birthday is coming up on March 25 – it’s her big 30-year-old birthday. Happy early birthday, Katharine!

10+ pictures inside of Katharine McPhee filming Scorpion…