If I did not have a 19yo step-daughter then I would probably include DS, might just write all of our names and not state "big brother". But it would be weird to include a 19yo's name on the card and weird if I put DS and not SD so I am just doing DH and me.
Jen - Mom to two December 12 babies
Nathaniel 12/12/06 and Addison 12/12/08
Re: question about birth announcement for #2
I would include DD too somehow.
I included DS #1's name in our announcement.
Married since 8.17.03
Mom to Richard 7.24.05, Ava 3.27.08, Isabella 5.19.09 & Timothy 10.22.14
I just got one from a friend and they included their DD...they put:
Proud Parents
Rick, Jennifer,
and big sister Rachel