As for "Growing Up Skipper," she's one version of Barbie's younger sister, and she's a strange case! When you raise the doll's arm, she gets taller and her chest grows, so it's not exactly a mystery why this doll didn't make it into the Barbie Hall of Fame. At the time, Mattel wanted a doll that would appeal to the growing stage of puberty — except it didn't work out so well. Still, Skipper is an important figure in Barbie lore, so she gets name-checked several times in the movie.

Despite being Barbie's little sister, Skipper is only seen twice in the film. Later in the film, Mattel executives recall a time when Skipper made it into the real world. Apparently, she kidnapped a kid in Key West. (Skipper's job, in Barbie lore, is "babysitter"). Executives then acknowledge that Barbie being loose in reality is a much bigger deal than when it happened with Skipper, but even so, Barbie's younger sibling caused a pretty harrowing situation that won't be easily forgotten by adult viewers.

"Barbie" is in theaters now.