**This chapter by infinity421**
Being the older brother to a kid like Jessica can be difficult at times for reasons not immediately obvious. Sure, she was sweet, kind and playful, but the last of those often meant that you were roped into whatever game she had come up with if her friends weren't around, and- well, you love Jessica, she's your sister - but there's only so much of her that you can take.
Jessica's also a very big kid for her age, and she's obsessed with it. Eight years old, and four feet, eight and one-quarter inches tall - Jessica stands head and shoulders above most of her classmates, and she loves it more than anything else in the world, save her beloved toys. The amount of pestering from that girl to measure her is insane! "Big brother, measure me, measure me!" If she were older you could simply refuse, but your parents say to go along with it - after all, it's just harmless fun, right?
She's always disappointed when she hasn't grown, too - every week, a rush to get both of you into her obscenely pink bedroom and her up against the height chart, and then that cute little frowning pout when she still hasn't grown. In private, you worry about what would happen if she grew, but... Well, that's not going to happen, is it?
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"Oh, big brother," Jessica said in a sing-song voice, drawing out each syllable for as long as humanly possible as she prodded at your ribs. Sat as you were on the sofa, book in hand, you tried in vain to ignore your little sister's continued attempts at attracting your attention. "Come on, big brother, measure me! I want to know if I've grown, especially since I've eaten all of my broccoli this week! Mum says that helps you grow! So come on!"
"C'mooon, big brother, I want to know if-"
With a sigh, you marked your position in the book and set it down, turning to face the little sister prodding and poking your ribs. "Fine, Jess, come on. But this is your one time this week, you hear?"
Jessica nodded as she giggled, running out of the living room and into the hallway. By the time you reached her room, her back was already flat against the height chart, the pink-clad girl giggling constantly. Pink, pink, pink - the walls were pink, her duvet was pink, the dress she wore was pink - the girl was obsessed with pink! Grumbling, you stepped toward the height chart that Jess used - it was one of the fancier ones, with a little thing you pulled down to get the child's height against a really long measuring tape with feet and inches and so on. All the bells and whistles, so to speak.
Uninterestedly, you marked Jessica's height down before doing a double-take, eyes wide open. Whereas before she was four feet, eight and one-quarter inches tall, Jessica was now four feet and nine inches tall, exactly. "You-you've grown, Jess," you mumbled as the pink-clad little sister let her excitement be known in the loudest way possible.
"Woow, big brother, look how much I grew! I hope I keep getting bigger, and bigger - oh, imagine if I grew bigger than you... Then even bigger than that!"
Truth be told, you did imagine that... And it scared you. Just a little bit.