We hear this all the time! Sewn- in cups are the usual ‘go-to’, quick fix solution for most alterations ladies. However, they are only likely to look great while you remain standing still in front of a mirror! Sewn in cups by their nature are merely unstructured cup/pads sewn inside the dress to give the illusion of a bra. They rely on the dress to keep them in place and therefore will provide no lift or support. Try to walking around, lifting your arms, turning around, kneeling or any other kind of full body movement and just see what happens. Sewn in cups will move with your dress  - not with your body and before long you’ll find your sewn in ‘cups’ sitting on the top of your breasts rather than supporting them. Not a good look when you’re planning on dancing and have a good time at your wedding! Not worth the risk in our opinion.