This week at Cardstore.com, the Invite Insanity theme is Birthday Party Invites. All BIRTHDAY INVITES are 75% off when you use coupon code CAL2136 at checkout! How great is that?! Whether you’re planning your own legendary bash, or want to surprise your BFF with a themed shindig, you’ll find more than enough inspiration with Cardstore’s selection of Birthday Party Invitations. They have fun and colorful ones for kids parties, or grownup sophisticated ones for a major milestone birthday. After you personalize the perfect party invite, you can have Cardstore address and send them for you at no extra cost!