CATFIGHT: HOLLY MADISON, JAYDE NICOLE TRADE ZINGERS

“Peepshow” headliner Holly Madison is in another catfight on Twitter.

Last week she slammed Hugh Hefner's “Runaway Bride” Crystal Harris for partying in Las Vegas on what was supposed to be her wedding day.

This time it was with another Playboy poser: Jayde Nicole.

The claws came out after Jayde Nicole tweeted about her fitness site.

“As we speak, Jayde sends me another spam email,” tweeted Madison. “Why would I lie about signing up for a site? And thanks for posting my email, you crazy!”

Madison added, “I could easily post Jayde's personal contact info, but I refuse to stoop to her level.”

In another tweet, Madison said, “don't sign up for shady fitness sites . . the people running them might post your personal email, too. #NoClass”

Jayde Nicole, who used to date Madison’s current boyfriend Jesse Waits (Cy’s brother), responded: “U actually signed up for the JNF mailing list on May 26th at 1104pm”

“Here's proof @HollyMadison & so did ur boyfriend lol he even paid for a membership! So pls don't talk sh*t http://mypict.me/l0961”

--NORM CLARKE, Vegas Confidential