Jim and Mary Smith, along with their son Tyler, would like to invite you to a baby shower for Tyler's new baby brother. (This involves the first child).
Our family will be doubly blessed with the arrival of our second child. Please join us in celebrating this event as we welcome this new addition to our expanding family.
The arrival of (first child's name) has brought so much joy and happiness to our family, we invite you to celebrate the arrival of our newest addition.