Question on Response & Invite Envelope Addressing

Hey Girls,

So i am very confused on this...

How am i suppose to address my response envelope?? The address I know,
but am i suppose to put

Ms. ME
Mr. FH
Address

and same goes for the invite invitation.

help. thanks!

ooohh nm lol

for my STDS I put
Jennifer A
Dennis C

I put just our last names w my address

smith & smith

I'll probably just put my last name.

Or The Future Sharts