A huge trend in Brides fashion of late is the 'illusion neckline'. The idea behind it is to not fully reveal your neckline by covering it with a sheath of very fine delicate material. This combines a look of innocence and beauty.

Credit Notes for the above dresses left to right:
Mermaid by Marberley Green, Igonne 2014 by La Sposa, Ellie Saab by Pronovias, Monique L'Hullier, Lavens by Pronovias, Stephanie Allins.
Unknown
Bridal Gowns,
Brides,
Illusion Necklines