For sportswear she switches the robe and puts on some wrists and shoulders:
Silver-thread Armor
Silver-thread Cuffs
Silver-thread Amice

Vendors
Some may argue that you should almost never buy equipment from vendors. While this is usually true for pure stat-boosting items, some vendors sell fashionable clothes, such as colorful shirts. Use the Dressing Room to help you choose when to take the plunge and buy something you might otherwise have ignored!

Be my guest!

OK! I will fight for those!

Also remember that you can preview items you are unable to wear. Check in with the Battlegrounds or PvP vendors and see how good you will look after your rank or reputation has increased.

Tip: When you browse a vendor's wares and use the Dressing room feature, you can close the vendor window, keep the Dressing Room window up and check out another vendor's wares. That way you can, for example, see how a certain weapon available at one vendor looks on you with a particular piece of armor available at another. You can even combine this with other methods, such as the chat link.

Chat

Who wants to buy
a custom made dress?
Any equipable item link can be previewed with the Dressing Room. To do so, just Ctrl+Left-Click on an item linked in chat. This technique is very useful to send "preview" links for things you can preview normally only on yourself. You can use it to link:

Professions items from your professions recipe window.
Quest items from your quest window.
Quest rewards
When you take a quest, you can now see how the reward will look on you. Ctrl+Left-Click on the icon and the Dressing Room window will pop up. If you want to show the new item's look to your guild mates or friends, you can Shift+Left-Click on the item's icon to display a link in a chat line, and they can then also see for themselves how it would look on their own characters.

So the Gnome King wants
to give me his dress?

Professions
You can use the preview with any recipe you know, with a Ctrl+Left-Click on the icon of the final product in your professions window.
Tips: You can't preview the recipe's end result unless you have learned the recipe. But, you can always ask higher level crafters to /whisper you back with the item link.

I love my goggles
If you want to avoid losing money and time when trying to sell crafted equipment, just link the item in chat to a prospective buyer. Keep your components handy to make that item on-demand instead of making one that may not sell.