Buy a Deluxe Lil' Princess Kit or build your own Lil' Princess Birthday Party Theme. The Princess Birthday Theme is the perfect way to celebrate your little princess. "Lil' Princess Kit" is a perfect choice for your event. She’s the world’s most beloved princess, and this party’s all about her. Our Lil’ Princess Kit has everything you need to hold court, from the unique die-cut princess tiara invitations to the princess pink tableware to exclusively matched tiara princess balloons. Save money and buy the kit, or build your own custom Princess Baby Shower kit by adding tiaras, scepters, banners, confettit and more.