While working from home, it’s easy to ignore the dressing up part. You may feel that since you are working alone at home, you can make do with the pajamas you have on. Nobody will know and no one will see you. Many people only change their clothes when they know that they have a meeting on zoom. And even then, they only dress the area that will be seen on the video.
But what should happen is that one should make an effort of dressing well even at home. If you only dress up to please other people, then you will not feel the need to dress up when you are alone. When one feels good about themselves, it reflects on their work too. Always look presentable. You may not put on any makeup, but wash and moisturize your face. Wear comfortable clothes that can pass for both work and home.