Michaels

Ok so it was a long time ago so I don’t remember where I ordered them from but you can probably google tear off reply wedding invitation... the invitations I got were all one piece. Like a long sheet that folded into a postcard size and I just used a sticker to close them. The response card was just a postcard sized tear off portion of the invitation that the guest just filled out and slipped back into the mail. Super simple and definitely cheaper than a stuffed envelope with all the different pieces.