(a) In any civil action, no party shall recover the same attorney’s fees, court costs, or expenses of litigation more than once pursuant to one or more statutes authorizing awards of attorney’s fees, court costs, or expenses of litigation, whether such statute or statutes authorize such awards for compensatory or punitive purposes, unless the statute or statutes specifically authorize the recovery of duplicate attorney’s fees, court costs, or expenses of litigation.

(b) In any civil action, if a party seeks to recover attorney’s fees pursuant to any statute authorizing an award of reasonable attorney’s fees, a contingent fee agreement between such party and such party’s attorney shall not be admissible as proof of the reasonableness of the fees.

(c) Nothing in this Code section shall limit or diminish any contractual right to recover attorney’s fees, court costs, or expenses of litigation.