One 10.5 x 6 inch Alphabet 1st Birthday Tall Centerpiece. Add some style to your tables with our Alphabet Zoo 1st Birthday Tall Centerpiece. This centerpiece was designed by Moxzie, Inc. to coordinate with our Alphabet 1st Birthday Party Supplies. The triangular piece is printed on all three sides, and set-up is quick and easy. Use your centerpiece alone, or pair it with our small centerpieces for a perfect matching set.