On and off the big screen, it's Barbie's world and Ken is just living in it. As reflected in Greta Gerwig's blockbuster movie that tackles the legacy Mattel's famous doll, Barbie has always been more popular than Ken. For every Ken doll sold today, there’s generally eight to 10 Barbies sold, according to Jim Silver, a toy industry expert and CEO of review site of TTPM. It's unclear if Warner Bros' “Barbie,” which was also co-produced by Mattel, will increase Ken production and sales.