Most Helpful Girl
I love my long denim shirt. You can wear it with jeans, tights, leggings, shorts, skirts, with or without a blazer, over whatever you wear as a long, open jacket (even over dresses), or simply on its own (since it's long).
I also love scarves and jewerly. Scarves can be worn in different ways (ribbon tied scarves and infinity scarves are my favorite) and quite opulent jewerly can be worn even with casual clothes (for example, a plain white T-shirt, boyfriend jeans, pointed stilettos) to "brighten it". Both of them can change the whole outfit.