I bought this bra to wear under a dress with a deep neckline.  First, the bra is very comfortable, stays up without any problems, and is smooth enough that I can wear it under any shirt and not have bra wrinkles show through.  But, despite being marketed for plunging necklines, it did not work for me that way.  For me, it's like a normal bra.  I will keep it because of its comfort but my search for a bra I can wear under my "daring" little black dress continues.  Just for information... I usually wear petite clothes and my bra size is a 38B.