A baby gender reveal party is a relatively new concept, and is gaining in importance. When a person is invited to a baby shower before an announcement of the gender has been made, or before a gender reveal party, there is the problem of what kind of gift is appropriate. This same dilemma occurs when a person is invited to a baby shower for which the future parents have not yet learned themselves of the gender of the soon to arrive baby.
Some people want the surprise at the time of the birth so they deliberately avoid learning the gender of their future child. Others may want to make the announcement to an entire group of friends and family at one time, and others may feel compelled to follow an order in telling people, hence opting for a gender reveal party makes everybody present first and avoids strife with those easily offended.
Regardless of the reason, if the gender is not made known, those invited to a baby shower are left with a limited amount of choices.