If you are attending a business call on Zoom, you should never appear in your casual clothes. This means do not wear caps, tank tops, or boxers even if you don’t have to stand up during the meeting. Also, only wear clothes with a few patterns or stripes, and avoid distracting patterns such as cheetah print. Such clothes can look great in person, but they do not appear professional on camera.
When getting ready for the Zoom call, always preview yourself in the camera to see how you appear in front of the background. Typically, darker clothes on light backgrounds and lighter shades on dark backgrounds work perfectly.