Katharine McPhee & David Foster Couple Up at Elton John's Oscars Viewing Party!

Katharine McPhee and her boyfriend David Foster pose together for a photo at the 2018 Elton John AIDS Foundation’s Academy Awards Viewing Party at The City of West Hollywood Park on Sunday (March 4) in West Hollywood, Calif.

The 33-year-old actress and singer and the 68-year-old music producer also stepped out for some pre-Oscars parties earlier in the weekend.

Katharine is currently finishing up the latest season of Scorpion before she flies to New York to prepare for her Broadway debut in the musical Waitress!

FYI: Katharine is wearing a Leilou dress, Saint Laurent shoes, Judith Leiber clutch, Anabela Chan earrings.

10+ pictures inside of Katharine McPhee and David Foster at the party…