Taking a big work bag or briefcase out to dinner or to a bar is a no-no. Instead, keep a small clutch at your desk or even inside the larger bag so that you can be ready for a night out anytime. A small gold, black or silver clutch will go with almost any outfit, and will immediately add some pizzazz to your look.

Jewelry

Jewelry is an important outfit transformer. Keep it simple during the day with relatively conservative pieces. Turn up the volume at night with some big bangles, dangly earrings, a broach or a cool necklace. Just don't add all of these pieces at once! Costume jewelry is fun and inexpensive. Keep a couple of key items in your clutch, so that you'll have them on hand when that spontaneous dinner invitation pops up.

3. Change up your Make-up

Changing or re-applying make-up is another way to transition your look from daytime to nighttime. Traditional daytime make-up is very muted and natural. For nighttime, choose one feature - either your eyes or lips - to play up, and go from there.

Playing up your Eyes

If you've chosen to dramatize you eyes, use a black eyeliner and line the top lids. For a really dramatic look, line the bottom lid as well. Keep in mind that this look is more appropriate for a dance club than for a dinner date. Touch up your mascara, and consider an application of some eyeshadow. A smoky eye can really give you the extra oomph toward a nighttime look.

Keep your lips close to your daytime look, or something natural. You don't want brightly colored lips to take focus away from your eyes. Consider using a tinted gloss instead of full lipstick, and make sure to bring the gloss with you in your evening bag.

Dramatizing your Lips

If dramatic lips are the look you are going for, keep your eyes nice and neutral. Touch up your mascara a bit, but don't add any extra liner or shadow. Too much eye make-up paired with big lips tends to look cheap and costume-like.