Bild Lilli is a German doll that was first introduced in 1955. Designed by Ruth Handler, co-founder of Mattel, Lilli was inspired by a comic strip character and was originally marketed as a toy for adults. The doll featured a fashionable appearance and was often sold in adult-themed packaging. Lilli became popular in Germany and eventually caught the attention of Mattel, which used her design to create the iconic Barbie doll in 1959. The success of Lilli and Barbie helped shape the toy industry, influencing the design and marketing of dolls worldwide.