Glam Girl Alessandria wrote saying she'd bought a dress (that BCBG Max Azria above) for a New Year's party where Old Hollywood Glamour was the theme. She said that she is "so lost as to how to wear this dress, the flashiness and sparkle intimidates me," and asked for tips on how to accessorize and pull off the whole look.
You're right, you have to be careful not to overdo the accessories here or it'll be too much. I would suggest you go with a plain silver clutch and sandals, along these lines:
Kenneth Cole "Mirror Me"
Enzo Angiolini "Holling"
For jewelry, I suggest you forego both earrings and necklace — this dress is really your main jewel here. I would, however, wear a wide crystal (rhinestone) bracelet:
Nadri Woven Pavé Cuff
Tasha Crystal Mesh Cuff