The bodice with loose sleeves shows a closely drawn centre between broad translucent-looking side areas. The sleeves begin below the shoulders and gather more closely at the wrists. Flowers and vertical lines divide the upper section. The raised-leg position opens the long skirt widely, so its ordinary closed or resting view cannot be fully assessed from this photograph.
If the side volume appeals to you, compare it with your arms relaxed. An outstretched pose can make sleeves look much broader than they do during conversation. Then practise holding a bouquet or a small bag. Notice whether the sleeves fall in front of the bodice or leave its side lines visible. This relationship is easy to miss when looking only at a sleeve detail.
For the skirt decision, request a view with both feet on the floor. That makes it easier to compare its lower surface with the sleeves. This reference is useful for describing a narrow middle framed by softer side areas. It does not establish detachable sleeves, an operative fastening or any particular hidden support construction inside the actual garment.