These happy birthday stamps are the perfect decoration for the envelopes of your birthday cards and birthday party invitations for you, your husband or wife, your children or friends or family members! Celebrate in style with these original, retro, modern, classic, pop art, trendy and stylish designs featuring beautiful artwork, photos and illustrations featuring yummy birthday cakes, sweet cupcakes, ice cream, colorful candles, bright balloons, lovely roses and other flowers, beautifully wrapped gifts, bold stripes, playful polka dots, and a whole lot more in blue, pink, orange, yellow and green! Don't forget that if you buy multiple sheets you'll get a bulk discount so stock up for future parties! Have the happiest birthday and celebrate in style!