By Georgia Trevitt Looking at Kate Ferdinand, it’s hard to believe she gave birth just six months ago. Not only does she look incredible, but she’s feeling it, too. “I’m feeling good,” says the 32-year-old. “I’m in my Zen era. I’m not always this chilled, though – it’s because I’m away from my kids!” Despite her calm energy, Kate’s life has become a lot busier since she and husband Rio, 45, welcomed their daughter Shae in July. She’s also mum to their three-year-old son Cree, and stepmum to Rio’s children Lorenz, 17, Tate, 15, and Tia, 12. Shae was born by planned C-section, and Kate’s recover…