article_snippet: Popular Instagram personality and personal trainer Kayla Itsines (pictured) is behind the extremely popular Bikini Body Challenge .
article_snippet: Personal trainer Kayla Itsines is pictured here with Personal trainer Kayla Itsines partner Tobi.
article_snippet: With a successful business and popular training regime, Personal trainer Kayla Itsines has more than 2.3 million followers on Instagram .
article_snippet: Personal trainer Kayla Itsines Personal trainer Kayla Itsines is the powerhouse behind the popular fitness brand, the Bikini Body Guide .