Is there any printed discussion about a woman wearing her husband's comfortable clothing?
While there is an Isur for a woman to wear a man's clothing, I've read in several places that this is about a woman specifically trying to look like a man.
On the other hand, it is quite common in American society for women to wear the clothing of their husbands (or boyfriends), for reasons ranging from comfort to status symbols. The least appealing, from a religious perspective, is probably a girl or young woman wearing her boyfriend's clothing - jacket, sweatshirt, etc. - to show off that they are a romantic item.
What about a married woman wearing her husband's sweatshirt or sweatpants as sleepwear, or as loungewear around the house for warmth, or to exercise in because they are loose-fitting and comfortable - and not as revealing as standard women's fitness-wear?