Ideal Little Black Dress

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I am looking for a nice Little Black Dress for this winter. Length- just above the knee, budget - up to £100. I have seen a lot of black shifts suitable for a City job outfit, but I would like something more trendy. I'm size 10, with a small bust. Thanks for your ideas!

Do you want sleeves or sleeveless? Is it for work, going out or something else?

How about:

This?

This?

This?

Too long?

This?

This?

This?

Thanks a lot! I really like the first Zara one! The dress is mostly for work and a little bit for going out - it should be versatile!