SunAngel, the only thing I can say is that clothes feel like pressure...I always struggle more with bottoms, I guess it's trickier to fit properly so that doesn't help...But also I think they've come to stand for a general discomfort about things...Like a mould I need to fit in. Even if it's a mould that I created for myself! They're my clothes after all..
Regardless of sizes and all... I think the fact that pyjamas are pretty neutral size/style wise and all, helps...

I think next time I go shopping I'll aim for something that I could sleep in.