United Kingdom, July 7 -- Colin Farrell has hailed his sister Claudine Farrell as "the boss" after quietly working alongside her for decades.

The actor, 50, made the comment as he lifted the lid on their long-running creative partnership, saying she has spent decades doing "all the leg work" while he remains the public face of the projects they develop together.

Colin reflected on his relationship with Claudine while attending the premiere of the second season of Sugar at the Hammer Museum in Los Angeles, and also told People about working alongside his sibling for the past 25 years through their production company, Chapel Place Productions, as well as returning to the role of private investigator John Sugar.

Colin said: "Me and Claude...