Karlie Kloss is ever the enthusiastic mother while taking her newborn son Levi for a stroll in Miami

Karlie Kloss is ever the stylish mother while taking her baby son Levi for a walk in New York City

Karlie Kloss cuts a stylish figure in a beige sweater and trousers for a New York City stroll

Karlie Kloss says her 'heart is full' as she shares new snaps of her pregnancy and son Levi