Not going to argue about how the word gets misused, tboy, but am inclined to disagree with your assessment of Amy's examples.
vo·lup·tu·ous
[vuh-luhp-choo-uhs]
–adjective
1. full of, characterized by, or ministering to indulgence in luxury, pleasure, and sensuous enjoyment: a voluptuous life.
2. derived from gratification of the senses: voluptuous pleasure.
3. directed toward or concerned with sensuous enjoyment or sensual pleasure: voluptuous desires.
4. sensuously pleasing or delightful: voluptuous beauty.
adj.
Giving, characterized by, or suggesting ample, unrestrained pleasure to the senses: voluptuous sculptural forms; a voluptuous ripe fruit; a full, voluptuous figure.
Devoted to or indulging in sensual pleasures.
Directed toward or anticipating sensual pleasure: voluptuous thoughts.
Arising from or contributing to the satisfaction of sensuous or sensual desires.
There's lots more sources out there for definitions, but most seem to focus on these qualities as defining voluptuous. Some definitions include "ample breasts and hips" but I didn't spot any that refer to "flabby and fat."
Since both Carmen Electra and Salma Hayek fall into the "sensually pleasing" category it strikes me, Amy, that there's no need for you to say:
And here's someone else who apparently epitomizes Voluptuous: