There are several traditional asana (postures). With props and without props which help you to reduce weight. You should practice them regularly.

Practice Suryanamaskar Everyday. Regular practice of Lateral Bending Postures as Trikonasa and Parivrutta Trikonasan also help to reduce the fat on the both the sides. It improves your muscle tone and reduces the undue fat.

Diet is equally important in reducing weight. Yoga along with a balanced healthy diet is most effective in reducing weight.

Experience this yourself

• By practicing traditional postures from the Reference books. 
• By practicing the Health Energy Peace set, each day workout for a week on You Tube Channel.
• Practice easy 10 Pranayam Kriyas on You Tube Channel. 
• By attending regular batches at Shubh Yoga Kendra.