Katharine McPhee's Mom: Angela Miller's Vocal Coach on 'Idol'!

Katharine McPhee is all smiles while filming scenes on the set of Smash on Friday (February 22) in New York City.

The 28-year-old singer/actress’ mom is actually a vocal coach to current American Idol contestant Angela Miller.

“My amazing new vocal coaches, Michael Orland and Peisha McPhee,” the 18-year-old singer tweeted, along with a photo of them together.

PHOTOS: Check out the latest pics of Katharine McPhee

The week before, Katharine attended the Alice + Olivia By Stacey Bendet Fashion Show Presentation during Mercedes-Benz Fashion Week.

FYI: Katharine is wearing a Coach bag.

20+ pictures inside of Katharine McPhee on the set of Smash…