yess...just cuz it is not yoohr first does not mean that the new baby is not special...i encourage a baby shower for every baby...it is a party given for a new life.
Since the purpose of a baby shower is to shower the new baby with gifts there is no good reason not to have a shower for each baby. Obviously if the second baby follows closely after the first or is...
The first baby is the first experience for the new parents and friends and family want to celebrate. However, as far as etiquette you can give a second baby shower for a second baby.
Make cookies in the shape of a little little booties and a cake that has to do with the baby shower. Also have some 7-up punch ( put vanilla ice cream in it.