Sweetheart looks should be paired with necklaces that lie close to the neck, like collars, and add a dose of sparkle or edge without over-crowding the delicate look of this sweet neckline. A larger bust in a sweetheart strapless gown is regal and sultry, so if you do want to don a necklace (and remember, it might be more chic without one), opt for something dainty. Should you have a smaller chest, a collar with substantial sparkle could amp up your bodice, and balance out the fullness of a ballgown.

Remember, it's all about balance: Necklaces that are too big will compete with the sweet, feminine style of this neckline, but petite pendants will look like an afterthought for the aisle unless they're layered, dainty, and sentimental. There's an inherent romance to a sweetheart neckline that begs for organic motifs like florals, celestial pieces, and dainty strands of sparkle—but be sure to look to the style of your gown to determine the style of your necklace.

J.Mendel gown, $12,990, jmendel.com

Buccellati necklace and earrings, price upon request, buccellati.com