Shhh, a surprise party's brewing! Top secret, one-sided Surprise Party invitations feature assorted warnings like "Keep a Lid on It" and "Confidential" surrounding the party information lines. Cover features "An Invitation" headline with fill-in lines "For," "Date," "Time," "Place" and "RSVP." 20 invitations and envelopes. Invitations measure 6 1/4in x 4 7/8in.