Perkins designs hundreds of new fashions for Barbie and the other doll. Every year, Perkins designs hundreds of new fashions for Barbie and the other dolls in the Barbie collection. Perkins has designed Barbie fashions for Mattel for over 20 year.In addition,she created Mattel's first African-American fashion doll, Shani. According to Mattel, Barbie designer must be creative and have experience in the design industry.