Any ideas on this one. "Second" parents on the Wedding Program

Hi all.  I have a bride who is very close with her Aunt and Uncle,
basically her second set of parents.  She would like to honor them in
that way on the program.  Any ideas on how to do this?  She really
doesn't want to have Aunt and Uncle of the Bride, Mr. & Mrs. 
Blablabla.  Thanks