Which dress is most appropriate to wear to a LOUNGE BAR?

[patricia]

Here is the place;
As you can see it's quite upscaled. But at the same time, it's a bar.. so I don't wanna dress too formally..
Which one is more appropriate/more sexy?

Option1:
http://cgi.ebay.com/New-Silver-Black-Satin-Sequines-Cocktail-Dress-/280617441601?pt=AU_Womens_Clothing_2&var=&hash=item870b9d8754

Option 2:
http://cgi.ebay.com/Top-New-Korean-Japan-Women-Sexy-Blue-Halter-Mini-Dress-/250760682597?pt=AU_Womens_Clothing_2&hash=item3a62805c65#ht_16385wt_1139

Thanks love!!