The Barbie Signature line, previously known as the Barbie Collector line, is a series of high-end Barbie dolls that are designed for adult collectors and enthusiasts. The dolls in this line are typically more expensive and have more detailed and intricate designs than traditional Barbie dolls. They often feature special edition packaging, unique clothing designs, and limited production runs. The Barbie Signature line includes a variety of different collections, such as the Black Label Collection, which includes dolls inspired by classic films and characters, and the Pink Label Collection, which includes dolls inspired by real-life celebrities and icons. The line is popular among collectors who are interested in owning rare and valuable Barbie dolls.