A set of clothes in addition to those already worn.
last straw
A small addition to an already heavy burden which causes it to exceed …
change horses in midstream
To change one's plan or approach when an effort is already underway or…
change one's tune
To reconsider; rethink; to reach a different conclusion.
change one's mind
To decide differently than one had decided before.
change of heart
A change of one's opinion, belief or decision.
change hands
To become the property of someone else; to be bought or sold.