Article continues below advertisementPaulina Porizkova showcased her ageless physique in a heartwarming tribute to a friend.The supermodel, 60, stunned in a leopard-print bikini alongside Mistie Savage-McGuire, who matched her "BFF" in a printed cover-up.Porizkova flaunted a bare-faced complexion in the Monday, September 1, snapshot.Article continues below advertisementSource: @paulinaporizkov/InstagramPaulina Porizkova honored Mistie Savage-McGuire's strength amid her cancer diagnosis.