Wavelength Bell Sleeve Midi Dress For the SS '20 collection, Australian designer Nicky Zimmermann cut her signature beachy femininity with a cool surfer spirit, complete with eyelet dresses and breezy scarf silhouettes. The 'Wavelength' midi dress embodies this aesthetic with its puffed, bell sleeves, relaxed fit and allover floral print. Wear with pointed flats, strappy sandals or no shoes at all - the choice is yours!