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SA SU PHI is the brainchild of Sara Ferrero (SA) and Susanna Cucco (SU), born from shared visions, taste and aesthetic proclivities, and the common quest for a golden ratio (PHI) that brings effectiveness, ease and expressiveness within the feminine wardrobe.
The Petit Shirt is a modern wardrobe essential crafted from silk crepe de chine. Its lightweight, matte finish and fluid drape offer understated elegance with everyday ease. Designed for soft structure and timeless versatility.
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Rates are approximations. Exact rates will be provided at checkout.




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