Some vaguely Inscription themed Outfits -- though I think there could be a lot of overlap between these and the other crafting professions listed in the subject header! In all of these costumes, I'm going for a generally scholarly/academic sort of appearance.
Kerisa the boomkin is my Scribe, so she'll be the model for these outfits.
An essential item for any Inscription costume, I think, is a book off-hand. Scribes learn how to make a number of book off-hands as they skill up and any one of them would do excellently. The one shown here, though, is the Tome of Alacricity, a Northrend quest reward.
Simple Dress plus White Swashbuckler's Shirt -- easy and classy, but not really very "Inscription" unique

Simple Kilt with Embroidered Armor (or any of its lookalikes in different colors) and Jewel-Encrusted Sash
The "dirty" ends of the sleeves of the Embroidered Armor are nice here because they give the ensemble a pigment- and ink-stained sort of look.

Simple Kilt with Gossamer Tunic and Jewel-Encrusted Sash

Simple Kilt with Starfire Vest, White Swashbuckler's Shirt, and Jewel-Encrusted Sash
This isn't going to be another Simple Kilt article, I promise!
If you want to spend a lot of time farming Stratholme, the Postmaster's Set (
http://thottbot.com/i13389) would make a really cool Scribe's costume.

The Durable Robe seemed like an appropriately monk-copying-manuscripts/librarian-ish sort of thing to wear.
I actually had a Durable Robe in my possession
before I knew about Kirina's Closet -- I acquired it because it matches the robe worn by Erozion, the NPC you meet at the entrance Old Hillsbrad in the Caverns of Time.
The tailored Brown Linen Robe would also work for a monk-ish sort of look.
Scribing is a rather wizardly sort of profession, all things considered:

Deathspeaker Robes (Razorfen Kraul) -- or your favorite black robe -- and Skywitch Hat (Terrokar Forest quest)

Dalaran Wizard's Robe and Violet Hat (the BoE Darkmist Wizard Hat is also purple).
The blue and gold Mistscape Robes have a matching blue Mistscape Wizard Hat, or you could wear your favorite red robe with the Red Pointy Hat obtained from a Netherstorm quest. This type of costume, with an offhand such as the Elementalist Star (which looks like a star-tipped fairy-godmother wand), would also be great for an Enchanter.

Dalaran Wizard's Robe and Purple Turban
Any other coordinating robe/turban combo would make a nice Inscription (or Enchanting) costume, too.

Something a little more exotic here with the Dreamweave Vest, White Swashbuckler's Shirt, Tuxedo Pants, and Purple Turban.
For more formal occasions, such as a meeting with other scholars, try the Black Mageweave Vest with Tuxedo Pants and either the Stylish Black Shirt or the White Swashbuckler's Shirt:

When assembling outfits for Tauren, I frequently ignore boots/shoes; if you're not a Tauren or a Draenei, the Dress Shoes, Brewfest Boots, or Brewfest Slippers would be good footwear to use with any of these outfits.

Some sort of glasses would be a great addition to an Inscription outfit. Besides the Noble's Monocle (which looks very silly on a Tauren), the best-looking glasses in the game so far, in my opinion, are the Steamworkers Goggles (shown above on Kamalia), a piece of mail healing gear which drops off Flame Leviathan in 25 man Ulduar (so Kerisa couldn't wear them anyway). Engineers can make a variety of green- or red- tinted goggles. For those who aren't shamans, paladins, or engineers, the red-tinted Spectrecles from Shadowmoon Valley questing or Paris Hilton's Ruby Shades are the only options for goggles, and somehow red-tinted glasses don't seem quite right for a Scribe. *sigh* (I suppose that during Brewfest a Scribe could wear the yellow-tinted Synthebrew Goggles, but would you really trust a glyph made by a drunk Scribe?)
Please ma'am, may I have a look at those fancy quills?

The books are nifty, but what would really make an outfit feel specifically Inscription-themed is a quill-pen offhand item. Oh, if only the "Elegant Writing Tool" which drops off of the owlbeasts in Winterspring were equippable!