A great tip for looking wide-eyed and awake, even when you haven't slept the night before, is applying a shimmery white eye shadow.
Only a little is needed and it makes a huge difference--it has now become part of my everyday makeup routine. Dip a small eye shadow brush into whatever shadow you choose and brush it onto the inside corners of your eyes. Make sure to blend, otherwise the result is not natural at all. Sometimes I even apply a little tinted moisturizer on top of the shadow. This creates an even more natural look and the shimmery shadow looks gorgey just barely peeking out.
I have two superb shadows that I use and love. The first is from The Body Shop (a great unexpected place to buy makeup, by the way). It's simply called Eye Shimmer ($11) and the best shade for this is Silver. It is not really silver, more of a shimmery white. .
My other pick is by FLIRT! and can be found at Kohls. The I'M WHIPPED Eyeshadow Mousse ($12) glides on smoothly and even acts as a great base for other shadows. The Snow Angel shade is a perfect shimmery color for highlighting.
Both of these are highly pigmented, so a little goes a long way. Now no one will know you went out clubbing last night!