When I go out, I try to wear something that hides my skinniness. I don't know how but some shirts/pants make me look very skinny and others don't. I don't wear jeans because they seem to restrict my body movement and it gives me a pretty bad backache. Colorwise, I prefer brown, green and orange and avoid black, blue and red.
At home I love feeling cotton towel fabric touch my skin (beach towel/bath towel). So I like wearing anything loose that feels like that.