The sister duo behind the Aussie label Zimmermann - Nicky and Simone - have crafted a Summer '13 swimwear lineup defined by a dichotomous harmony. Impeccable sculptural technique and retro femininity are married within the frilled edges of sweetheart bustlines, dotted mesh bows are delicately adorned to triangle bikinis, and colorful floral prints have been artfully splashed across lightweight rompers, vintage one-piece silhouettes, and halter-neck sundresses. With the Australian countryside (natural sunlight, rolling hills, and babbling brooks all in the mix) as Zimmermann's lookbook backdrop, this is certainly the stuff our Summer dreams are made of. See it all inside, then shop the collection here.