Evie's Fight Club Outfit is what she wears in Robert Topping's underground fights, not an outfit with bonuses.
Topping's fistfight tournaments run across London's underworld, and both twins compete in them regularly. Jacob has his own Fight Club Outfit, built from Simply Jacob and Suave Outfit pieces.
Aveline (Evie)
The Aveline outfit gives Evie Frye the look of Aveline de Grandpré and adds three to each tool capacity. It comes from the Ubisoft Club.
Ballgown (Evie)
The Ballgown is the formal dress Evie Frye wears to infiltrate the Queen's ball.
Baron Jordane's Finery (Jacob)
Baron Jordane's Finery is an upper-class suit for Jacob Frye that lets him carry three more of each tool: throwing knives, hallucinogenic darts, smoke bombs and voltaic bombs.
Blackguard's Suit (Jacob)
The Blackguard's Suit is a dark blue and black Jacob Frye outfit that cuts the melee damage he takes by 20%.