The sleeves are where a white midi dress gets its personality. Puffed sleeves add volume and softness. Flutter sleeves create movement. Long fitted sleeves read as elegant and controlled. Layered or tiered sleeves add visual complexity. Short sleeves can be crisp and tailored. The sleeve changes how the dress reads entirely without changing the overall silhouette. This is the kind of detail that makes the dress feel intentional rather than default. A white midi with interesting sleeves photographs well because there is something to actually look at. You are not relying on the whiteness alone to carry the piece. The sleeve detail does real work in making this feel like an actual design choice.