What type of dress is this?

I saw a lady wearing a dress that looked kind of normal at the front but at the back it kind of separated to look like a tied crop top and a skirt. It looked kind of 40s style and I really loved it but I don't know what this kind of dress is called or were to buy some. This is the nearest thing i could find to what the back looks like:
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Bow Ties|Pre-tied bow ties

Joining lengths of optical fiber is more complex than joining electrical wire or cable. The ends of the fibers must be carefully cleaved, and then spliced validationtesting together either mechanically or by fusing them together with an electric arc. Special connectors are used to make removable connections
Other uses of optical fibers