tone or style may not be appropriate for Wikipedia. Specific concerns may be found on the talk page. See Wikipedia's guide to writing better articles for suggestions. (December 2009) Shane and Sia Barbi with a rescued kitten Shane Barbi and Sia Barbi (born April 2, 1963[citation needed], in San Diego, California), known collectively as The Barbi Twins. They are vegan identical twin celebrity models turned health and fitness authors and animal rights activists. Cosmopolitan UK referred to the twin's popularity in the 1990s as "Barbi Mania" due to their record breaking Playboy magazine covers and top selling calendars reported by E! True Hollywood Story..