From cleavage to jaw line - necks and collar bones can be gorgeous. Check these few Boston boudoir images of one woman with a sexy décolleté. from wikipedia:
Décolletage (or décolleté, its adjectival form, in current French) is the upper part of a woman's torso, between her waist and neck, comprising her neck, shoulders, back and chest, that is exposed by the neckline of her clothing. However, the term is most commonly applied to a neckline that reveals or emphasizes cleavage. Low-cut necklines are a feature of ball gowns, evening gowns, leotards, lingerie and swimsuits, among other fashions. Décolletage may be regarded asaesthetic and an expression of femininity, in some parts of the world any décolletage is considered provocative and shocking.