·A dear little son! Baby boys are wonderful and though they're kind of small. The happiness they bring you is the greatest joy of all.
·There's nothing sweeter than a baby girl. Your little girl has many happy years before her, having you to care for and love her.
·A new baby boy! May life be especially wonderful for your wonderful little boy!
·It's wonderful to hear the news of what you've been dreaming of, a really perfect grandchild to cuddle and to love. Congratulations!
·May the dear new baby girl who's yours to love and treasure bring you many, many years of very special pleasure.