Shirt Tallow Relaxed from Zimmermann. The shirt in ombre multi from Zimmermann's Resort Swim 2025 collection is a silk blouse that blends relaxed elegance with timeless style. Made from soft, flowing silk, it offers a luxurious feel and is perfect for both poolside lounging and summer festivities. The unique stone buttons and cuffed sleeves with buttons add a bohemian touch, while the classic collar creates a sophisticated yet laid-back look.