Pregnant Katharine McPhee, 36, turns heads during errand run with husband David Foster, 71

Katharine McPhee, 36, puts her baby bump on display during lunch outing with David Foster, 71

Katharine McPhee puts her burgeoning baby bump on full display as she steps out to run errands in LA

Rob Lowe, 20, rocks a mullet in 1985 snap from St. Elmo's Fire composer David Foster