While having a breast augmentation is the only way to drastically increase your actual breast size, there are some easy, non-surgical ways to make your breasts look bigger. You can also try exercises to make your breasts perkier. Talk with your doctor if you have other concerns, such as being underweight, needing contraception, or considering alternatives to surgery. Tip : Make sure to stand and sit up straight, too. This is an easy way to make your breasts look bigger.