This is a 2006 Limited Edition Silkstone Barbie doll named "The Siren" by Mattel. She has red hair, hazel eyes, and a light complexion. Standing at 12 inches tall, she is part of the Silkstone Barbie product line.
The doll is in its original packaging and comes with a Certificate of Authenticity (COA). There were no more than 9,635 of these dolls made worldwide.