Knee-Length Party Dress: R&M Richards 4134So pretty, this cap sleeve knee length party dress by R&M Richards is sweet, breezy, and perfect for sunshine filled days. With a bright blue print from the square neckline to the hem, this short semi formal dress includes delicate ruffled cap sleeves that bring a touch of romance. The easy to wear casual blue print dress has back ties that create a graceful bow that adds a playful and feminine look. The skirt flows to a modest knee length to finish