K.M.
A.,
I was thinking the same thing the other day and started my search early since I am six 1/2 months pregnant and don't want to have to search for something like this post-delivery. I like all those details decided upon beforehand, while I have the time!!!
These two websites speak to exactly what you are looking for.
http://www.babyfreshdesigns.com/girls.htm
(I have used babyfreshdesigns before for other occassions and really impressed with her quick turn around, her custom designs, and her prices too).
And another one I have used in the past for other things, is:
http://www.invitingsmiles.com/Birth-Announcements-Home-Pa...
All the best,
K.