You can make Hello Kitty Invitations, or buy them. Amazon has 8 packs of Hello Kitty Invitations
, as well as the Hello Kitty Notecard Portfolio Invitations
and finally the Easy Invitation Design Program
.

Hello Kitty
Hello Kitty Birthday Party
Hello Kitty is a popular birthday theme. Hello Kitty is simple, fun and sweet, supplies for a hello kitty party are easy to come by and to make.
Making a Hello Kitty Birthday Cake
A Hello Kitty cake can be really easy to make. For a double layer cake, cook Three round layers of cake. Stack two like you normally would for a layer cake. Then, cut the third into 4 triangular pieces, and stack two for one ear, two for the other. If you want the chin flatter, just use a bread knife to trim it down. Cover the whole cake with a layer of white fondant and use black frosting in a piping bag to trace the outline of Hello Kitty’s head, nose and eyes. For her whiskers, cut six black licorice strings in half, you might want to thread a toothpick through the underside to keep them stable. For her bow, use a red floral bow or create one from fondant. Roll out a portion of red fondant and cut it to size. Trace the outer edges of the bow and the knot area with black frosting.