When something bad happens, your sister is the person you turn to. She will rant on your behalf, hold you when you cry, and do her best to cheer you up when you need it. And you return the favor. You are each others' support and good time, the voice that encourages the other to indulge in delicacies. Today, shower your sister in love. Make her birthday the best day possible. Pamper her. She deserves nothing less on her birthday.