Kevin is Lindsay's 15-year old brother, and the oldest of the three siblings with the middle child, Lyra, having just turned 13 yesterday. (Lindsay would be 11 in a few months) Like Lindsay, he's generally pretty nice, but would defend his younger sisters to the end if he had to. It's this reason that led him to coming to Lindsay's room in the first place, having heard her cry out his name earlier. He's also aware that his youngest sister still prefers the company of her female classmates to the male ones even though Lyra had started becoming interested in boys around that age, but he feels as her brother it's his duty to support her within reason.
Seeing his 10-year old sister in a toga made of toilet paper pretending she was a giantess getting revenge on Regina, a bully from her school, was... about the last thing he was expecting to see. Kevin has a huge giantess fetish, but feels a bit of shame for feeling aroused at this scene considering it's Lindsay... and perhaps a twinge of fear if Lindsay really did grow into a giant. As it is, her 4'5" height makes her seem enormous for her age, and Kevin imagines she'll probably become the tallest in their family by the time she's an adult. Maybe a little over 6 feet.
"Lindsay! What are you doing dressing up in toilet paper?" Kevin finally asks, trying to take the older brother voice of reason tone with her.
"Um... I was..." Lindsay begins, right before yelping in shock as the rest of her toilet paper outfit fails and leaves her completely naked, her face becoming even redder than before.
Kevin has seen his sister naked plenty of times before when they were younger, but nonetheless averts his gaze. "Please get dressed, Lindsay... Don't argue, just do it..."
A few minutes later, Lindsay has gotten dressed in her proper clothes, which fit her lengthwise but are a little baggy everywhere else since they're meant for older girls that have a bit more feminine curves than her relatively lanky body. Naturally, her feelings of embarrassment haven't faded, and because of this fails to notice the slightest tingle run through her body... "So, kiddo, care to tell me why you were dressed up in toilet paper like some kind of weirdo?" her brother asks calmly.
"I was dressing up like that lady in the movie you and Lyra watched when she got really big. I thought it seemed kind of neat... until you stumbled in on me." Lindsay answers, trying to hide the full extent of why she chose to dress that way.
"Why not use your spare bedsheets instead? Toilet paper is perforated to make it easy to take as much as needed. It's not meant to be worn, just wipe your butt before you flush the toilet." Kevin says to her before asking carefully, "Or is it being easy to tear away part of the point of why you used it?"
"The girls in your movies seem to have no problems with tearing clothing..." Lindsay answers quietly, looking away to hide her blush, the memories generating a familiar sensation primarily in her privates she's too young to really understand along with a tingling she can't really describe. She almost feels like her clothes are becoming less baggy, but can't really tell at first glance.
"WHAT?! You... you've seen those?" Kevin exclaims in shock, now feeling pretty bad for potentially corrupting his youngest sister. Then again, the fact that the movies he loves to watch are still on the family computer (he's saving up to buy a laptop to put these on) in the first place suggests either their parents are quite lax on what's on the machine, or... they themselves are macrophiles as well. Lyra has watched a few of the classic ones, but doesn't seem to be that hugely into it yet.
"I was gonna play a game or two, but I accidentally clicked one of those videos and I couldn't look away!" Lindsay explains, the brunette not knowing at the time that she was aroused by what she was seeing, though these days the start of her puberty, and the hormones associated with this, are drawing her into the fetish of macrophilia even more as girls start looking sexually attractive to her. Her fellow female classmates are starting to flirt and talk about boys, but she just can't get interested in them.
"It's okay, Lindsay. I'm not mad at you. Did you hurt yourself when you fell on your dollhouse?" Kevin says. Lindsay shakes her head slowly in response. He then says, "That's a relief. Now, clean up this mess before mom comes in and blows her top on us both. I don't know how she'd react to you intentionally destroying these things..."
"Huh? Us both? But what about sis?"
"Don't you remember? Lyra's visiting her friends Ethan and Crystal today, so it's just the two of us."
"O-oh... right." Lindsay replies, blushing slightly as she had indeed forgotten that her sister was out of the house today in the commotion of her pretend giantess time going awry. It was kind of shocking that she's slightly taller than her sister despite being younger, though Lyra has started to develop a pair of cute little A-cups. Not much, but enough to warrant a bra. Lindsay almost wishes they weren't sisters so she could do what she's always wanted to do to her without it seeming weird.
As Lindsay cleans up the mess, she notices things become ever so slightly easier to reach, or overreach. She also feels a little warm, but rationalizes it for living in Hawaii. It's always a bit hot here, and she's busy with cleaning up the remains of the dollhouse, so surely that's what is making her feel warm. The last thing she thinks of is that it's the beginnings of the craziest puberty in history and eventually won't have to use her imagination to experience being a giantess. Regina may yet regret the day she started teasing Lindsay...
For now though, Lindsay has merely grown an inch at best, and is unconsciously rubbing her chest a little as it feels slightly sorer than usual. She notices on the way out of her room as she passes her old height chart, but it doesn't register with her that she's grown just now. No, she's been 4'5" for a little while now, so she instead figures she may have grown slightly since the last time she measured herself.
Unbeknownst to her, this is just the start, and will be growing more noticeably soon. Like the growth in the Attack of the 50 Foot Woman, only in slow motion...