Big Sister,
Over the years our relationship has changed in many ways. When we were younger and I was the "bratty" little sister and you were the "hormonal" teenager, to when you were the "cool" college student and I was the "hormonal" teenager. Even through all of these changes you were still my big sister but in the past few years the roles have seemed reversed. No longer am I your "bratty" younger sister and no longer are you the "cool" college student, but now we are best friends. This means not only does the five year age gap between us no longer matter but that even sometimes I have to be the big sister. Now that we both have grown up we have learned to appreciate each other in new ways and understand each other better. I love you and am extremely proud of all you have accomplished. I feel so very fortunate to have been someone you have confided in through all your hardships along the way. You have always been there for me and always understood where I was coming from. We came up in the same household so whenever I need a good rant session I know I can call you. No matter where life takes is I know I have you. Now that I'm older I'm glad you have me as well. I know you can not always talk to mom or dad about things and those are the times where I get to be your big sister and take care of you. I love you sis and no matter what you've got me in your corner and I will always be there when you need me. It's okay to not always be the big sister.
Love,
G