An Old Fashioned Bride
One wonderful look is the puff-topped or "mutton" sleeve. This sleeve starts out bigger at the shoulders but trims to fit most of the upper arm and all of the lower arm closely. Puff-topped sleeves are a very traditional look and go well with a highly decorated or elaborate gown with a long veil.
Winter is a wonderful time for long sleeves. Trim your cuffs with white faux fur for an absolutely dreamy colder-weather look. If you'll be using trimming, you will want to have the rest of the sleeve be close fitting so that the decorative trim isn't swallowed up by yards of fabric.
For the Modest Bride
Another common reason for desiring a long sleeved wedding dress is modesty. Some brides cover most of the arms for religious reasons; for others, it's a matter of personal taste. If you're the modest type, have the rest of the dress match this theme. A high Victorian neck or neckline area mesh and a long, full skirt complete this look. (See Modest Wedding Dress for more ideas.)
A relaxed and dreamy look is the flowing sleeve that ends by fitting tightly around the wrists. This style is suited to a medium- to long-length skirt, a fitted natural waist and a V-neck with loose ruffles.
For dramatic impact, choose a sleeve that ends about two inches past the elbow and is fitted tightly all the way down. If your wedding will take place in the evening or if it's a black tie affair, you can pair this style with short white gloves.
You can wear long sleeves at any time of year. Just be sure to pick a material that's light and breathable. Look for a cut that fits fairly closely to the arm, but not too tightly. Steer clear of voluminous sleeves with a lot of fabric.
You can use mesh for wonderful effects. White mesh gives the illusion of sleeves while offering breathability for a warmer climate or a summer wedding. Choose a full length sleeve rather than just below the elbows for a glamorous look.
Another stunning style is the flesh colored mesh sleeve. This sleeve blends in with the wearer's skin tone for a nearly invisible look. Rhinestones, pearls and other decorations line the mesh and appear to be worn directly on the skin.
Nothing says "wedding" like fine lace. Try a Victorian look with all lace long sleeves. Lace also makes a nice accent; have it cover the entire sleeve, or attach bits of lace at the shoulder seams and the wrist cuffs.
You will want to subtly match your bridesmaids to your look. Choose bridesmaid dresses that also have long sleeves. Since your gown should be dressier than theirs, have their sleeves sport similar accents, but fewer of them; for example, a simple line of pearls from the shoulder to the elbow rather than two or three strands that run all the way down.
Enjoy your long sleeved look!