Look at the whole garment
A fabric name alone does not tell you how a piece will feel. Weight, weave, lining and fit all contribute. Hold the garment up, feel its thickness and check what sits underneath. A light outer fabric with a substantial lining may feel very different from an unlined version.
Try a looser shirt with trousers, or a simple dress that does not cling when you sit. Follow your workplace's dress requirements and choose the amount of coverage you prefer. Stand in daylight to check whether the fabric is more transparent than you expected. Include the underlayers you will actually wear during this check.
Keep an indoor layer separate
If your workplace is cool, carry a cardigan or light jacket rather than choosing a heavy base outfit for the whole day. Make sure the layer fits over the sleeves without bunching. Put it on while seated at a desk so you can check the cuffs and shoulder movement.
A jacket kept at work can simplify the commute if you have somewhere suitable to store it. Otherwise, test whether it folds comfortably into your bag. A small layer that travels well may be more useful than a structured piece you spend the journey balancing over one arm.
Read the care label before adding something to your regular work rotation. Consider whether you have time for its washing, drying or professional cleaning requirements. A garment that needs more attention than your schedule allows may become an occasional piece rather than an everyday one. Set out the outfit with shoes and bag, then check the forecast for the return journey. Warm mornings do not always remove the need for an outer layer later.
