Oh boy, this one is a hard topic because obviously it’s going to be different for everyone. Obviously you want to make sure that you are comfortable, but it’s also going to depend on the time of year and your environment. If you love to read by the pool, you aren’t going to do that in flannel pajamas.
I do most of my reading inside, so as long as I’m wearing comfy pants and a shirt, I’m happy. Some of my essentials are either being under a blanket or having super fuzzy socks on. I also always have to have my hair out of my face, which usually means pinned up or a ponytail.
If I’m reading while traveling I have either a large stuffed animal or pillow usually hugged against me or acting as a headrest. In all things reading, especially for an extended period of time, comfort is key. I have a number of lounge pants and super soft t-shirts that suit this purpose.
What do you prefer to read in? Does the outfit matter to you, or is where you are more important?