Little black dresses

This fall, I went to the ballet with my friend Jason and his girlfriend, who was wearing a little black dress with a sleek ponytail and red lipstick. She looked so incredibly chic that ever since then I've been on the hunt for the perfect little black dress. Here are the six pretty ones...
1. Bardot dress.
2. Lace dress.
3. Bow dress.
4. Beaded dress.
5. Pleated dress. (The leopard heels are a fantastic touch.)
6. Lace dress.

Which would you choose? I think I'd go for #1 or #5...

P.S. Hot pink would be fun, too:)

(Top photo of Tamu from All the Pretty Birds)