Some days of the week I work from home. On those days I might not actually get dressed at all and I'll work all day in my pj's.
Some days of the week I go into the office to work. I don't go into the office wearing my pjs, I wear a suit and I look what I am; a professional woman in the workplace.
The work I do from home is exactly the same as in the office; it is not impacted by what I wear. But out of respect for my employer and my colleagues, I wear clothing that respects the environment that I am in, and the people who have to work with and around me.
I am a professional woman in the workplace, who not only respects my employer and my colleagues; I have self respect too. I therefore wear a formal suit. It's not difficult these days. You can pick them up for about £35.