I can't say what it's like to be a big sis to anyone... tho I tried my hardest as a kid to get my parents to give me a baby sibling. I even went so far as to ask if we could trade my oldest brother in for a sister. That didn't work, either. Ach well, I adore you Paul, wouldn't trade you for a thing... You, too, Justin.
But when it comes to being a big or lil sib, it sure is fun when you can boast about it, even on your tee shirt!