TuxedoIf a man is part of a wedding party, he has little to say about the tuxedo he'll be wearing. The bride- and groom-to-be usually make that decision.

However, a man who needs to rent or buy a tuxedo for other weddings or formal events has lots of choices.

There are definitely trends in men's formal wear. But to look and feel his best and most confident--whether he pays full price or happens upon a great sale--a man should select a style that flatters his body type.

Here are some good, easy formal wear-buying guidelines for men of all shapes and sizes:

Choose styles according to body type

Short and thin:
Avoid a jacket that will overwhelm you, such as double-breasted styles. Try a one-, two-. or three-button single-breasted jacket with a low button stance. Opt for thin lapels; or if you want to add more width to your upper body, go with a wide lapel or notched collar. Accessories with large, obvious patterns can also be overwhelming. A solid cummerbund or a subtly patterned vest and a matching bow tie are the way to go.

Short and stocky:
A classic black one- or two-button tuxedo with a shawl lapel is an excellent choice for you. Black is slimming, and the longer lapels will add length.

If you have a thick waist, choose a vest instead of a cummerbund. The horizontal lines of a cummerbund will add width, while the vertical lines of a vest will add length and draw attention upwards, toward your face. Pair the vest with a four-in-hand tie to really emphasize the look and add length. For shirts, avoid wing-tip collars, which will make your face look heavier.

Tall and thin:
You can wear almost any style. You will look equally good in a classic black tux, a longer 5-button jacket, or a double-breasted style. The same goes for accessories—you have many options.

Tall and stocky:
Avoid double-breasted jackets and wide lapels since they will add bulk. Instead, opt for a thinner shawl lapel and a traditional single-breasted tuxedo jacket.

When it comes to accessories, if you have a wide face or a thick neck, avoid thin ties and wing collar shirts, which will add weight to your face. Similarly, opt for a non-pleated or wide-pleated shirt. Multiple thin pleats will add bulk. If you have a thick waist, try a vest instead of a cummerbund and bow tie. The horizontal lines of a cummerbund will add width, while the vertical lines of a vest will add length and draw attention upwards, toward your face.

More men's formal dress-up fashion tips:

Jacket fit: Shoulder seams should fall at the natural shoulder. Fit should be completely smooth in the back, without any pulling or gaping across the shoulders or extra fabric hanging in the area between the shoulders.

Jacket length: The jacket should reach your fingertips when your hands are completely relaxed and cupped.

Sleeve length: The sleeve of a man's tuxedo or other jacket should fall to where the wrist breaks.

Shirt length: At least a half inch, and preferably 1" beyond the sleeve of the tuxedo jacket

Pants break: The classic break is one in which pants barely touch the front of the shoe end are angled back to touch the top of the shoe sole in the back.

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