Shape and line are important elements of design that impact the silhouette and movement created by clothing. Shape is the overall outline or form of a garment as seen from a distance and first impression. It can reveal or disguise the body. Lines have direction, width, and length, and can lead the eye in different ways. Common line types include straight, curved, and jagged. Vertical lines emphasize height while horizontal lines widen the appearance. Diagonal lines can also lengthen or widen depending on their angle. Structural and decorative lines are used in garment construction and details. Optical illusions can also be created through line patterns like arrows, T's, I's, and Y's that influence perceived height and width