Author's Notes: Kara and Alex scenes are always my favorite to watch and write, so I've decided that I'm going to write a series of shorts about them. Just little scenes between sisters because they're so cute. This series will be about the things Kara and Alex do for one another.

I. Buttons

"I'm sorry! I'm sorry," Kara apologized as soon as she flew in the window. She was late. Again. "In my defense, National City residents cannot drive in the snow, not even when it's just falling and not sticking. I swear they're worse than Californians in the rain."

"It's fine," Alex dismissed from where she was sitting on Kara's couch. "Mulder and Scully can wait. Lives in the balance cannot."

It felt something like a betrayal to agree with such a statement (as Mulder and Scully were some of her and Alex's oldest friends), but it was still truth. Kara gave a nod.

"I made sure it was being DVRed," Alex added, glancing back over her shoulder at Kara for just a beat before returning her gaze to something in her lap, "But you did miss out on the cheesiest pieces of pizza. Claimed."

"Can you actually claim something when the other party isn't around to witness the claiming?" Kara questioned as she grabbed a drink out of the fridge.

"Yep," Alex replied. "Because I made the claim with my mouth. As in I ate them already."

Kara rolled her eyes, coming up behind her sister. "Of course. Couldn't even wait a few minutes."

"A few? Try an hour and forty-five minutes," Alex countered. "I was starving. You're just lucky I didn't start watching without you."

Kara paused a moment when she realized what Alex had been staring at since she'd arrived was a pile of shirts in her lap. "...What are you doing?"

"Sewing."

"Sewing?"

Alex looked back up at her. "Buttons."

"Sewing buttons?"

The older Danvers sister shrugged. "I was bored and your pile of sad, buttonless shirts in the corner of your room was just pathetic. It's like half your wardrobe."

"It's not half—"

Alex gave her a look.

Kara floundered helplessly for a beat before deflating. "Okay, maybe… forty percent." She plopped down on the couch next to her sister.

Alex stuck the needle through the adorable rose print fabric of one of Kara's favorite shirts. "Either you're having some torrid love affair with someone who has a thing for literally ripping your clothes off—"

Kara felt her face blaze at even the suggestion of such a thing.

"—Or you're not taking the extra point-five seconds to actually unbutton your shirts while changing into your Supergirl outfit."

"I... may approach the change with a bit of overzealousness."

"A bit?" Alex raised an eyebrow at her. Kara shrugged sheepishly. "Have you ever tried looking for shirts with snaps?"

Kara frowned. "Have you? The only shirts made with snaps are for toddlers and cowboys. Neither look I can pull off."

Alex gave a contemplative nod. "Mmm."

"Are you… sewing on snaps instead?" Kara asked, almost hopeful. It would look different, but it would certainly be easier. She was pretty sure that Cat was catching on to the fact that she'd been cycling through the same seven shirts over and over because she'd de-buttoned all her others and hadn't had time to go buy more (or sew the buttons back on herself).

Alex snorted. "Ummm, no," she said. "No one has time for that. Not to mention I'm pretty sure adding snaps to shirts is a totally different process."

Kara heard the underlying admission and nodded in understanding. "And you also suck at sewing."

"And I also suck at sewing," Alex readily agreed, returning the nod. "You'll be lucky if these buttons even line up with the holes."

Kara laughed and shook her head before falling silent again. She knew that while Alex was claiming boredom and passing it off as nothing, she was actually doing it because she saw it as another way to take care of Kara.

"Thank you for doing this," she said and she meant more than just the sewing. It was for everything.

Alex seemed to pick up on the sentiment within Kara's words because she smiled softly. "You're welcome," she said. "Now, are you here for the night? Can we finally see what truths are out there?"

"Yes!" Kara replied as she leaned forward and snagged a piece of pizza. She warmed it up with her heat vision and slumped back into the cushions of the couch while Alex, after pulling down the blanket and tossing it over both their legs, pressed play on the DVR.

"My name is Fox Mulder. Since my childhood, I've been obsessed by a controversial global phenomenon…"

A/N's: YES, I should be working on the next chapter for "Boom" and I AM, but this little scene wouldn't shut up in my head so I just had to write it. I also have several ideas for more sisterly scenes, so more to come!

(Also, if you have ideas of what you think Alex and Kara might do for each other and would possibly like to see it written, let me know!)