Siblings share a special bond that extends beyond friendship. A sister fulfills many roles. If you’re younger, she can sometimes be a second mother and a confidante when she’s not bossing you around. If you’re the older sibling, she’ll no doubt be in part the most annoying thing on the planet some of the time, and the best thing ever the rest of the time. She’ll look up to you and adore you. Older or younger, we have a happy birthday ecard for your sister that will enable you to wish her the happiest birthday ever, with just the right sentiment. In fact one of our cards sums it up perfectly – “A sister is a constant reminder of who you are, where you come from and a thousand embarrassing moments you’d like to forget.” Make your sister’s day and personalize your card with your own words and pictures.