Bridal Gowns That Fit and Flatter continued...

Here's another way to get that hourglass look: If you're a lot smaller on top than on the bottom, she says, look to an off-the-shoulder style; if you're larger on top and smaller on the bottom, choose a gown with a slim-cut skirt, in a sheath or A-line style.

For a universally flattering look, look for princess tailoring (seams that run lengthwise, without a break at the waist). Or, look for high-waisted styles with a "breakaway" A-line shaped skirt.

Some styles to avoid: Narrow trumpet skirts; straight-cut dresses in super-slinky fabrics; the "mermaid" look with a tight, narrow skirt and large flounce; and oversized, pouffy ball gowns, particularly those with long sleeves.

"When you encase a larger figure in too much fabric, it begins to look larger," says Aucone.

If you're self-conscious about your upper arms, consider a wedding shawl, lace jacket, or another coordinating wrap or boleros. For an extra touch of elegance, Shear says, many wedding-gown manufacturers will supply material by the yard, allowing an experienced bridal shop to whip you up a shawl or bolero in the same fabric as your gown.

"This is why it's important to choose a full-service salon -- one that can not only guide you in fit and style, but also take care of alterations, and, if necessary, create pieces to customize your look."

Another plus to visiting a full-service salon: Most can guide you to the right bridal undergarments. Yes, experts say, formal gowns require formal undergarments to smooth and shape the figure. Most bridal salons carry several lines.

"Ideally, you should not even try on a bridal gown without the proper undergarment," Aucone says, "and you certainly should not have your final fitting without one, since a well-made corselet or bustier can take as much as three inches off your waist, sculpt your bust line, and reduce your midriff."

Bridesmaids and Moms: Show Your Style

Another plus-size wedding challenge is slipping into your attendant's gown only to discover it was chosen to fit and flatter someone half your size.

But this season experts say the plus-size attendant is in luck: The two-piece bridesmaid gown is one of the hottest styles.

"Not only does this give attendants the opportunity to shop for a top and bottom that is most flattering to their figure type, they can also buy them in different sizes so there is a minimum of alterations."

Among the most popular choices at David's Bridal is the "Mix and Match" collection. Brides can choose their color and fabric preferences, then allow each attendant to select her preferred top and bottom from a variety of coordinated styles. Other designers offer similar collections.

"We realize that not every girl in the wedding party is the same size or has the same figure issues, so we have created a collection that allows each attendant to look her best while still holding true to the bride's vision," says Freeburn.