Like mother, like son! Katharine McPhee and her newborn son Rennie are already twins when it comes to their spring style. The "Country Comfort" star shared a peek at a recent family get-together, featuring her, Rennie and their relatives in cotton candy-colored swimsuits from her stepdaughter Sara Foster's collab with Summersalt. The gang shot a smile for the camera as Kat held little Rennie in her arms.