The Insider.com

The oven mitts are off as the tension between Jane and Nikki finally boils over on Sunday's all-new Drop Dead Diva -- and TheInsider.com has an exclusive sneak peek at the ladies' faceoff!

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Fueled by Stacy's "pake" discovery in last week's episode, and Jane's hesitation to fund her culinary endeavors, everyone's favorite dead model living in a lawyer's body does some digging into Nikki's past and learns something quite incriminating!

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The episode, titled Freak Show, marks Kim Kardashian's latest guest spot as the questionable Nikki and proves that she's interested in removing the "reality" from her reality TV star description.

Check out TheInsider.com's exclusive sneak peek above and tune in to Drop Dead Diva this Sunday at 9 p.m. on Lifetime! Plus, if you missed the first two episodes, Lifetime will re-air them both beginning at 11 a.m. on June 17!