Kendra Wilkinson and Holly Madison may never be at peace with one another and resolve their issues.

Last year, the Kendra On Top star and Madison were basically at war with each other because Madison released a tell-all memoir that painted Hugh Hefner, his Bunnies and life at the Playboy mansion in a negative light.

Madison claimed she was telling the truth and her side of the story in the book, while Wilkinson bashed her in public for lying and having ulterior motives, like fame and getting a piece of the Playboy brand.

On Monday, the feud sparked up again through a heated exchange on Twitter. 

I have a very interesting day of filming #KendraOnTop let's just say I am meeting up with someone from the past. Who do you think?????" Wilkinson tweeted.

After a fan wrongly guessed Madison, the former Holly's World star tweeted, "It's definitely not me. I've moved on from all that stuff."

In reply, Wilkinson lashed out in a series of tweets that have since been deleted, according to TooFab.

"Moved on from that stuff? So u think writing that book of lies will pardon your past? U can run but u can't hide," Wilkinson wrote with an emoticon of a face sticking its tongue out.

Wilkinson then mocked the name of Madison's memoir: Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny.

"Hollys book should have been called 'Up the wrong hole,'" Wilkinson tweeted.

After posting three more tongue-out faces, Wilkinson reportedly continued, "I hate fighting but I hate people who think they are better than you. If people can be real, I'd at least respect that."

But Wilkinson quickly came to regret her rant.
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"You know what I made a mistake by lashing out right there so I'll erase it... God bless," she wrote.

In Madison's memoir, she accused Hefner of being extremely controlling, offering her drugs, playing mind games and bribing her with money when she lived in the Playboy mansion. Wilkinson fired back at Madison for "re-writing history" in defense of Hefner, as both girls had previously starred on The Girls Next Door together.

The fifth season of Kendra On Top premiered with back-to-back episodes April 1 on WE tv.