Life's a "b*tch," and so is Kanye West's girlfriend. The rowdy rapper has just dropped a hot new tune entitled "Perfect Bitch." And oddly enough, this is dedicated to the one he loves. The outspoken 35-year-old wrote the song about girlfriend Kim Kardashian. "Perfect Bitch" was played for the first time in a New York hotspot over the weekend. Rumors immediately began circulating that the ditty was written about the reality show star -- and he quickly confirmed them via Twitter. He Tweeted, "I wrote the song Perfect Bitch about Kim." Sources tell the New York Daily News that West surprised clubgoers at the PH-D Rooftop Lounge when he spontaneously took control of the DJ booth at about 1:30 a.m. Saturday morning. He did a 45-minute set with yet-to-be-released tracks including "Perfect Bitch." One source tells the Daily News, "(He raps) verses about his search for the perfect woman and how he has now found the “perfect bitch.'" In the song, he also gives a shout out to curvy Kim. There are also references to ex-girlfriend Amber Rose. Another source says the song was a hit with clubgoers, "The crowd was on their feet." While "Perfect Bitch" may be a hit among fans, it's likely to drawer the ire of feminists everywhere. West has long been criticized for his misogynistic lyrics. It goes without saying that the musician's critics will think his new jam is anything but perfect.