Sweet 1st Birthday Girl Balloon Bouquet (Each) - Party Supplies This is for a (5) Piece 1st Girl Birthday Party Mylar Balloon Set. (1) 30" high #1 pink Sweet Birthday Girl Pattern Mylar Balloon. It is as pictured with Flowers, Butterfly's and Ladybugs. The front is as pictured, and the back is different. (2) 18" Sweet Birthday Girl Pattern Round Mylar Balloons. (2) 18" Pink Plain Round Circle Shaped Mylar Balloons.