The amount of Hello Kitty religious tat on the market is not limited to the unofficial, it seems. For example, here is a Hello Kitty Cross Rosary pendant for sale on a Japanese Sanrio web site. The cross is about 3.0 x 3.2 cm in size and is made of sterling silver with a rhodium finish. Four cubic zirconia stones are placed in the centre of the flowers. It comes with a 50cm chain, and costs a mere ¥9,800 (approximately £45).
But that's not all. Look what Hello Kitty Hell found: a blinged out Hello Kitty cross, with diamante everywhere and a Kitty head that swings in front. No news on whether it sings Always Look on the Bright Side of Life, but it ought to.
But Kitty's for everyone, not just Christians. Again, unlikely to be official product is this Hello Kitty yarmulke:

