Opposite page: Form- fitting sheath gown by Ilissa Bridals has portrait neckline and long sleeves. Classic ballgown by Priscilla features V-neckline, basque bodice and fan-shaped pleated sleeves. an otherwise unadorned gown. The details may vary but the traditional full-skirted gown is still the preference of most brides. Now, how- ever, Mrs. Leonard observes, "they want to personalize their gowns. They'll wear an heirloom veil. Or, if they don't have an heirloom veil, they'll put some antique lace on their gowns. Modern Bride magazine's Mrs. Aerts- Niddam also has predictions for the upcoming season. Although bridal gowns tend to be seasonless, certain features are more likely to be found on spring/summer gowns. Thus, like the appearance of tulips and daffo- dils, off-the-shoulder necklines are a hallmark of spring/summer gowns. Usually, these necklines are elasti- cized so that they can be worn either on or off the shoulders. This season, she sees the portrait collar, a graceful version of the off- the-shoulder neckline, as the Number One neckline. (Although it's been around for awhile, French designer Christian Lacroix popularized the portrait collar, also known as the fiche collar, in his haute couture clothes.) Short sleeves are another spring favorite. This season, although every sleeve treatment under the sun — pouf, cap, leg-of-mutton — is avail- able, the newest sleeves "tend to be big but the (decorative) treatment of the sleeve is simple," Mrs. Aerts- Niddam says. After years of crisp fabrics like summer-weight satin and tafetta, the big news, she continues, is the entry of soft fabrics like organza, chiffon and organdy into the bridal market. Of the many spring styles she has