Leona Lewis has flaunted her growing baby bump while working up a sweat at her Los Angeles gym.The singer was spotted wearing an electric blue lycra gym suit after her workout on Monday, and is looking radiant while pregnant with her first child.The 37-year-old combined her gym look with a pink baseball cap with her hair tied up underneath and a grey hoodie tied around her waist. She donned a pair of white Nike trainers and carried a bag as she made her way home after her workout. Get exclusive celebrity stories and fabulous photoshoots straight to your inbox with OK!'s daily newsletter. You can sign up at the top of the page.