Why Halle Berry is trying to perfect her purr

Halle Berry is heeding the catcall — prepping for her starring role in Warner Bros.’ ”Catwoman,” due in theaters next summer. ”It’s great — lots of fight training and whip work,” says the Oscar winner, who’s been a fan of the feline comic character since seeing Eartha Kitt play her in old episodes of the 1960s ”Batman” series. ”Catwoman’s been done by great women, and I’m just hoping I can stand among them and add some of my own personality.” Berry won’t reveal how her costumes compare to Kitt’s spandex sparkles or Michelle Pfeiffer’s S&M latex, except to describe them as ”amazing…different than any others.” And the kitty lingo? Promises Berry, ”’I’m trying to get my purr just right.”