Mage, aren't you bored to death from wearing those same old Novice Robes every time you start a new game? Don't you wish you could wear something else for a change? But the offers are scarce. The only robes that you can get that give you the "reduce spell cost, increase magicka regen" combo (other than the common college Novice, Apprentice, Adept, etc) are the Black Mage and Necromancer robes. But these have three disadvantages: One, they're ugly; two, you're dressed like a bad guy; and three, the magicka regen rate tops at 50% in these robes. Even the best will give you 22 spell reduction, magicka regen 50%.
There are these Mage robes around, blue, brown, grey etc. But most of them are not available in the normal game, most of them have no magic, and the only one that does (Blue Mage Robes) gives you 50% magicka regen rate, like the Novice Robes, but it has a hood which cannot be removed and which prevents you from both seeing your toon, and wearing any headgear. So you don't really use them, right?
Another disadvantage with the college robes is that they have a mantlet (that collar thing) that crops with many headgear items, and also with modded long hair, like Apachii's.
So I have made a set of robes with the college enchantment (reduce spell cost, increase magicka regen) based on the various Mage robe models available. Nothing has been replaced, you can still find your regular robes around if you get tired of these.

Novice Robes: You can find two items that take the place of this at the Riverwood Trader. The Novice Blue Robes Plus and the Novice Clothes Plus. The first are blue robes but without the hood (BTW if you like the hood, Lucan sells that item (vanilla Blue Mage Robes). The second is based on a variant of the Merchant Clothes which has very little use in the game and in my opinion looks cool, especially the male version. The female version looks like any dress, except that's is more fine-looking, dark blue with golden embroidery.

Novice, Apprentice and Adept Robes of ... : These have each been assigned a color based on the school of Magicka as follows:
Destruction- Green
Conjuration- Grey
Alteration- Brown
Restoration- "Monk", the light brown robes of the priests of Kynareth. Appropriate since they are devoted to healing.
Illusion- Red

The model is the same for all three levels of any given school. Note: These robes crop minimally with hoods on the front, barely noticeable. Anyway, the point is seeing our toon without headgear right? You can see Elfond of Illo my model in the pics proudly flaunting his flowing white elvish hair (courtesy of Apachii). He used to have only short hair before. These robes fit very well with most clothes-type boots and shoes. I haven't tested them with all the armor boots but most seem to be fine.
I have also included Boots of Magicka Plus of the "monk" type (those yellow long things) and cloth gloves of Magic Resistance to complement the robes if you want your mage to be zero armor. These and the "Novice, Apprentice and Adept Robes of ... Plus" can be found with Farengar in Whiterun. He won't always have everything available, it is random and also leveled.
If you want to give yourself these item using console, type: ~ then: help plus. A list of all my items (last name 'plus') will appear. Then type player.additem ID# 1 where ID# is the ID number of the item of your choice as appeared in the previous step. You can use page up and page down to scroll through the list in console.

>I didn't make Expert or Master Robes because I think those look fine, and they don't have mantlets.

Incompatibilities: None that I know of. Should be compatible with or without all DLC.

Instructions: Download, extract the file and drop it into your Skyrim/data folder.
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Version 1.01
Added Gloves of Magic Resistance

Version 1.0
Basic Mod