The actress has landed the recurring role of Dani, TV Line reports.
Dani, who is described as confident but outspoken, is charged with driving the M.E. van but is hoping to get promoted as she is interested in forensics.
Kelley previously played Neela in The Fast and the Furious: Tokyo Drift and has also had guest roles in shows such as Lone Star and CSI.
Body of Proof, which premiered earlier this year, stars Dana Delany as a former neurosurgeon who becomes a medical examiner after a car accident.
The second season of the show will begin on September 20 on ABC.
> 'Body of Proof' Dana Delany interview: 'I'm kind of a science nerd'