New Delhi, Jun 21 (ANI): People all over the world are observing International Yoga Day today. Among such enthusiasts are Bollywood stars who are celebrating the day by doing yoga, motivating fans to follow the same. Fitness seems to be the new word doing the rounds in the country. Modi, in May, called for a #fitnesschallenge. This spiraled into a nationwide social media campaign, called #HumFitTohIndiaFit. In keeping with the #HumFitTohIndiaFit challenge and to commemorate International Yoga Day, here is a round-up of celebrities who swear by yoga including Bipasha Basu, Karan Singh Grover, Shilpa Shetty, Rajeev Khandelwal, Jacqueline Fernandez & Kangana Ranaut. B-Town celebs and sports-stars took to their social media accounts by uploading videos and images to celebrate Yoga Day. Bollywood actresses Kangana Ranaut and Shilpa Shetty recently put on their yoga clothes and stepped outside to do asanas amidst nature.