A sleeveless white or cream dress reads as formal and sophisticated while keeping things light and comfortable for a warm weather ceremony. The absence of sleeves means you get formal elegance without heaviness or stuffiness. Sleeveless in white or cream reads as intentional design rather than just practical. You can layer a light jacket or shawl if the venue requires it but the underlying dress is clean and polished. These sleeveless white and cream dresses work because they deliver formality without requiring you to overheat.