Dream about big shirt is about emotions and relationships that you did not recognize. You need to look out for yourself and protect yourself from emotional or psychological harm. You are feeling drained. This is a premonition for your practical thinking. There is a situation or relationship that you need to revive.
Big shirt dream is a symbol for unknown and major changes that are occurring in your life. You are trying to cover-up or hide something. Somebody is dumping all his/her feelings on you. This signals something in your life that is within reach, but continues to escape your grasp. You need to be more direct with your personality.
If you dreamt about big shirt:
You wish to put some distance between you and a certain love interest. It does not necessarily follow that the relationship is at an end, but it could mean you do need to spend some time apart doing other things, and also find out what it is like to regain your independence for a while. The break will probably do you both good.