What to wear when you will sit for most of the day
A piece can look comfortable standing and behave differently after an hour at a desk. For a long study session or workday, start with how the waist, shoulders and knees feel when you sit. Add polish once those points work.

Compare two bottoms in a chair
Try a straight or wide leg with a waistband that feels easy at your natural sitting position. The photo shows one wide-leg option; the useful part is room to bend, regardless of the silhouette you prefer. Sit at a desk, lean forward and cross or uncross your legs. If a seam bites or a fastening digs in, test a different rise or waistband rather than relying on stretch alone.
Plan for a change of posture
Wear a top with enough shoulder room to reach a keyboard without pulling at the back. If an indoor layer feels bulky under your arms, switch to a lighter cardigan or a roomy shirt. Keep the hem at a length that works when you stand, so it does not catch your shoe as you push away from the desk. Add a jacket for a meeting if you need one.
Make the fit note specific
After wearing the outfit, write what you actually noticed: “waist fine seated, hem catches on stairs” is useful. “Uncomfortable” is harder to act on. Replace the piece causing the issue and save the revised outfit for another desk day.