@FoldabotZ
 
Thank you for that. :)

@Someguy88  
 
HA HA HA! OKTOBERFEEEEST!

@Kakapo  
“Um, why did you volunteer me to pass out drinks at the event, Pinkie?”  
“Because you need to be around other humans more! They also said that you’ll need to wear a costume.”  
“I’ll go ask Rarity to make something for me, than.”  
“Don’t worry, they already supplied one for you. Check it out!”  
_{“Oh my.”}

@Background Pony #48BB  
I’m starting to think Pinkie might be responsible.

@Kakapo  
You’re welcome.
 
I suspect Rainbow Dash and/or Rarity as the culprits. I mean, come on, would Rarity (or Rainbow Dash for that matter) really pass up such a chance?

@Meanlucario  
But it’s never suggested that she wanted to dress like that. ;)
 
@Background Pony #48BB  
Interesting costume trivia nevertheless. I’m a sucker for attention to detail in clothing.

@Meanlucario  
Well, she is blushing a bit. Maybe she didn’t know the costume version was a little short
 
Both versions look like they’d be fun to wear though

@Kakapo  
I don’t think shy is the type of person who goes for “sexy.”

@Kakapo  
Yes, the knot is a newer thing. To be honest I didn’t know about that either. I thought that was a regional thing, because often there are slight differences depending on the area, but apparently I was wrong. I think it’s kind of like with the flowers in Hawai’i. In the end, it’s just a matter of own preference, I guess. In the area were I live, it’s done with the color of the apron. The only thing I remember, though, is that a black apron means the wearer is a widow. But I think it’s just a matter of preference as well.
 
But to sum it up:  
Front right side (“heart” side) - married  
Front left side - not married  
Back middle - widow  
Front middle - virgin, I think

@Background Pony #48BB  
Yes, the differing authenticity of the dirndls is deliberate. Twilight is supposed to represent that she did the research, while Shy simply dons a sexier, commercialized design.
 
The only thing I was initially lost with was the position of the apron knot. During research I found some that were tied to the left and others to the right, but it was only later, when I was nearly done with the pic, that I was informed through someone who actually knows a little about the dress that the position of the knot was supposed to indicate marital statuses (there is also a version tied to the back that is supposed to indicate that the wearer is a widow), but they were also unsure which side is which. At least I know now.
 
Eh, live and learn.

@Ping_chan  
Well yeah, but it still needs a bit of foam to look good. I’m not saying it’s impossible, but you really need strength and a steady hand. Most waitresses use something to carry them.
 
Twilight’s dress is much closer to an actual Dirndl. Fluttershy’s looks like something Viennese would wear. Ech.  
Also, Twilight is apparently married.

@Background Pony #48BB  
The less beer that’s contained in each stein makes carrying them easier!

@Nightweaver20xx  
It’s not that hard. You can carry 6 glasses in each hand. Not spilling it however, is another story.

The fact that Flutters can carry that many beer steins is pretty amazing.

I like the detail you put into the clothing! Nice work!

HA HA! OCTOBERFEEEEEEST!