"I have a very small bust. How to make, to make it less visible?”
Highlighting the silhouette, tight sweaters and a deep neckline bodysuit are unfavorable in your case. Well, if the upper garments are decorated with frills, ruffles and drapes, which slightly stand out from the figure. But if you want to reveal your cleavage a bit in the evening, there are bras (Wonderbra), in which there are small cushions on the sides of the cups, optically enlarging the bust.