Camisole
/ˈkæmɪsəʊl/
Definition 1 of 2
Pro Tip 1/3Layering Piece
A camisole is often worn for modesty, layering under sheer tops or dresses. 
Her sheer blouse was paired with a camisole to ensure it wasn't see-through.
Pro Tip 2/3Summer Clothing
In hot weather, a camisole can be worn alone as light, cool attire. 
It's so warm today that I'm just wearing a camisole with my shorts.
Pro Tip 3/3Fashion Versatile
A camisole comes in various materials and styles, suited for casual or fancy looks. 
She chose a lace camisole to add an elegant touch to her outfit.