Should RSVP cards match the invitation paper?

Ideally, yes. Using the same paper stock and finish across the whole suite gives the set a polished, intentional look, and it signals that every piece belongs together.

• Match the stock: the same weight and finish on the invitation, RSVP, and details card reads as one cohesive suite.
• Match the finish: keep matte with matte or gloss with gloss so nothing looks like an afterthought.
• Practical exception: RSVP cards travel through the mail, so a slightly sturdier or writable surface for handwritten replies is fine.

With dozens of paper types available, coordinating every piece from invitation to RSVP to details card is straightforward.