This shimmery collar beautifully mirrors the curves on a sweetheart bodice. A pair of crystal button earrings adds glitz.

Dannijo "Garbo" earrings with Swarovski crystals (dannijo.com), Amrita Singh "Victoria" necklace with Austrian crystals (amritasingh.com), and Reem Acra gown (212-308-8760).

Bold multistrand necklaces, bejeweled bibs, and even classic pearls sync up exquisitely with this dress shape -- think of it as the ultimate blank canvas. Then follow the "less is more" mantra for earrings: Studs or small drops hit all the right notes. "A strapless neckline shows off your clavicle and shoulders," says bridal designer Reem Acra. "To accentuate these areas even more, choose jewelry that hits right at your collarbone."

Dana Rebecca Designs "Anna Beth" earrings with citrine (danarebeccadesigns.com), Iradj Moini necklace with freshwater pearls and detachable quartz and citrine brooch (212-925-5666), and Thread "Clara" dress (threaddesign.com).

Mikimoto "Akoya Special Edition" cultured-pearl necklace and earrings (mikimotoamerica.com).

Caleo "Halo Crescent" necklace in 18k yellow gold (Caribou Jewels, 970-925-1930).

Ranjana Khan necklace with jade and crystals (thomaslain.com).

Cathy Waterman earrings with diamonds and white topaz (ylang23.com).

This universally flattering cut draws attention toward your face and neck -- especially when it's teamed up with the right accessories. "Long earrings and delicate pendant necklaces really complement this design," says Acra. As a pretty twist, layer a few color-coordinating baubles together.

Alex Sepkus "Sticks and Stones" earrings with opals and diamonds (alexsepkus.com); Becky Kelso necklaces in blue topaz, calcite, and green amethyst (all beckykelso.com); and Lela Rose "The Glacier" gown (lelarose.com).

Diane von Furstenberg by H.Stern necklace with rock crystal and diamond accents (hstern.net).

Jamie Joseph necklace with rose-cut rock crystal teardrop pendants (jamiejoseph.com).

Wendy Mink Jewelry "Peach Cluster" earrings with cubic zirconia and moonstones (wendyminkjewelry.com).

Ray Griffiths Fine Jewelry earrings with citrine and rutilated quartz (raygriffiths.com).

Dana Kellin "Emerald Mix" necklace with a green-topaz briolette pendant and teal-toned fluorite and chrysoprase (twistonline.com).

The diagonal sweep of this fashion-forward shape is a statement all its own -- and requires little embellishment. Forgo a necklace and slip on a pair of light-catching earrings and an oversize cuff. "Choose earrings that are beautiful from the back, too," says jewelry designer Ranjana Khan. "People will see a lot of you from this angle as you walk down the aisle." And for a balanced look, "wear your bracelet on the arm that's bare," says Acra.

Siman Tu "Three Leaf" crystal earrings (simantu.com) and Rivini "Sasha" gown (rivini.com).

Jardin for Jennifer Miller bracelet with faux diamonds (jennifermillerjewelry.com).

Judith Leiber "Glitz" bracelet with enamel and pave crystals (judithleiber.com).

Ippolita "Crazy Eights" earrings with quartz (ippolita.com).

Rodrigo Otazu "Insanely Chic" cuff with Swarovski crystals (for rental at renttherunway.com; otazujewelry.com).

Jose and Maria Barrera earrings with Austrian crystals (Tabandeh, 202-244-0777).

Elizabeth Cole "Bacall" earrings with blue ombre-effect crystals (elizabethcolejewelry.com).

Necklaces with a little length prime this retro style for a modern-day comeback. "Consider strands of translucent crystals or quartz that drape over the neckline and allow skin and fabric to peek through," says Khan. "Don't be afraid to layer several pieces." As for your earrings, choose a slight drop in a similar stone.

Andrea Fohrman "Georgia" rock-crystal earrings (saksfifthavenue.com); Allia "Fancy Chain" quartz necklace, doubled up, and "Fancy Stone" quartz necklace (brokenenglishjewelry.com); and Fancy New York "Madeleine" gown (dressmefancy.com).

Amanda Sterett "Savannah" bib necklace with Japanese white pearls (amandaterett.com).

Laurie Kaiser "Orb" earrings with mint amethyst (Fragments, 212-334-9588).

Siman Tu necklace with green amethyst (simantu.com).

Melissa Joy Manning 48-inch necklace (melissajoymanning.com).

Larkspur & Hawk "Lily" earrings with topaz (212-826-8900).