Starbucks has a remarkable logo. Cheers to Doug Fast - The designer of the latest green Starbucks logo :).

After some research, I came to this site, http://www.deadprogrammer.com/starbucks-logo-mermaid, and found it comprehensive about Starbucks logo. Here’s the brief of the evolution of Starbucks logo:

There’s a chapter about Sirens in the book called A Dictionary of Symbols by J.E. Cirlot. The woman-graphic in the center of Starbucks logo was believed originated from the mythological half-women, typically called Siren (with the half-bird/half-woman and the half-fish/half-woman varieties). The half-fish type normally called Mermaids. Wise mythologists came up with an answer that it is a two-tailed mermaid sometimes called a Melusine.

The original brown cigar band-shaped Starbucks logo had an slightly altered Siren from that book. The belly button and the unattractive shading around the bulging tummy were removed and the tail-legs was merged. The new Siren also smiles a little compared to the 15th century one.

This is the original “cigar band” logo.

New “cigar band” logo with the nipples covered up:

Next, here’s the more familiar stylized green Starbucks logo.

The current logo, with the Siren image cropped, only showing a hint of the tails.

This is the new supporting graphic of Siren image with only one tail. It was used as part of store decoration and product packaging.

Below is one of the latest coffee bags that re-imagines the siren in a modern and attractive way.