A-line dresses are a classic choice that never goes out of style. This dress style is fitted at the top and gradually flares out from the waist, creating an A-shaped silhouette. A-line dresses are flattering for most body types and can be dressed up or down depending on the occasion. Pair a knee-length A-line dress with pumps for a sophisticated office look, or opt for a longer A-line dress with wedges for a summer wedding.