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Nellie Howard Ossi X Uptown Baby Sweet Hearts Long Sleeve Romper She'll bloom in this one. The Nellie Howard Ossi X Uptown Baby Sweet Hearts Long Sleeve Romper in the Blooming Bliss colorway is a Spring 2026 collaboration that wraps your baby girl in the most enchanting print — a whimsical blend of sweet hearts and florals brought to life by artist Nellie Howard Ossi. Every detail is thoughtfully designed for the tiniest wearers: soft against delicate skin, easy to put on, and impossibly sweet to look at. A romper that feels as special as she is. Exclusive Blooming Bliss colorway from the Nellie Howard Ossi x Uptown Baby collaboration Whimsical sweet hearts and floral print — charming and beautifully detailed Long sleeve design for all-day and overnight infant comfort Available in sizes 3-6 Mo through 18-24 Mo By Uptown Baby | Spring 2026 Collection