Black Pencil Skirt

What accessories to wear?

I am going to an event where the dress code is cocktail attire – simple dresses or a nice skirt/top. I’ll be wearing the top in the link below with a black cami underneath (as it’s very low-cut) and a black pencil skirt and black stiletto slingbacks.

http://www.anthropologie.com/jump.jsp?itemID=15161&itemType=PRODUCT&iSubCat=319&iMainCat=314

Would it be best to go with some black chandelier earrings? Or should I wear crystal/cubic zirconiums? Big earrings and no necklace? Or small earrings and a simple necklace? It’s a "casino night" and I was going for a classy 40’s screen siren kind of look. Please advise!