Yes Anchie I live in loungewear when at home. I don't like to cook, clean, etc in my good clothes so I change out immediately. Here are the brands and amounts of each:
1. Anthropologie joggers - I could look up the brand for you if interested. I have three (black, olive, and salmon).
2. Pact leggings - I like the soft organic cotton and they wear really well, have washed them over and over again weekly for several years and still going strong with little pilling/fading. I now have eight sets, as I took advantage of a recent clearance sale and bought 4 more.
3. ON tank tops -- because they come in petites. I think I have about 7 or 8 of these as well. When it's bedtime, I swap the leggings for boxer shorts and sleep in tank+boxers. As I said, I run hot.
4. AE bralettes
5. Circle cardigan/wraps -- I have two Athleta Pranayama wraps and another similar from AE which is lighter weight
6. A variety of Jcrew vintage v and scoop neck tees, which I'll pair with the joggers when it's too warm for the wrap but too chilly to just wear a tank top.
7. I also have a couple of Lou & Grey fleece tunics, not sure they count as loungewear as I am apt to wear them out of the house with jeans on a casual day.
Note I do laundry about once a week. I like to change into a fresh set of loungewear each day.
I do not like to wear athletic gear as loungewear as I don't find that comfortable. I prefer cotton for breathability.
Summer loungewear is a bit different. If I'm not in tee+joggers then I'm wearing an ON maxi dress, the ones that have pilled and faded too much to wear out of the house.