People commonly think that wearing lose fitting clothes is a good way to hide any unwanted lumps and bumps. Sorry to tell you, it doesn’t work! It just makes you look shapeless and larger than you actually are!
Rule number one has to be keep it simple! Wearing excess material, big buttons or large pockets can interfere with the clean lines which are so slimming.
An hourglass body shape is the most pleasing to the eye and so what you are trying to create is an hourglass silhouette. People often think this means big boobs (!) but in fact the three areas you should focus on are the width of your shoulders, waist and the width of your hips.