Cupcake Themed Birthday Party Invitations - Gender Neutral (Set of 25 with Envelopes) Cupcake themed fill in the blank birthday party invitations - gender neutral (set of 25 with envelopes) 4.25" X 5.5" one-sided, one-panel invitations with white envelopes Heavyweight smooth white cardstock - blank on the back Perfect for hosting a cupcake themed birthday party for a boy or a girl Cupcake Collection by Artistic Media Design