Katharine McPhee, 37, hints at svelte midriff as she grabs lunch with David Foster, 71

Katharine McPhee flaunts her abs in a dusty pink sports bra as she promotes her new bra range

Katharine McPhee is one stylish mama in fitted jeans and beige sweater

Katharine McPhee says she is 'at peace' with her body after giving birth to son Rennie