Bride To Be Party Pin. Party Pin has 12 unique and fun challenges for the Bride to complete. It is on a 4 inches flashing button that turns on and off. The challenges are printed on layers that are stacked onto the button, as each challenge is completed, stick it to the person that helped to complete the challenge and see how the party grows! Once all the challenges are completed you will reveal that she is the #1 BRIDE! Includes:1 flashing 4in button, 12 bridal challenges.