Janet Jackson vows to slam Beyonce?

Janet Jackson vows to slam Beyonce for publicly ridiculing the way her parents raised her, The ENQUIRER. reports.

"Beyonce's remark came out of left field and really stung Janet," a family insider told The ENQUIRER.

In describing her own childhood, Beyonce recently told a reporter: "I grew up upper class. Private school. My dad had a Jaguar. We're African-American and we work together as a family, so people assume we're like The Jacksons."

"But I didn't have parents using me to get out of a bad situation."

When Janet heard about the slam, "she blew up," revealed the insider.

"Yes, Janet and the Jackson family came from Gary, Indiana, and there was a time they barely squeaked by. But Janet has many loving memories and is incensed that Beyonce would make a crack like that.

"Janet wanted to know why Beyonce had to mention her family. They're not friends and barely know each other. She feels Beyonce went out of her way to tell the world she's from the upper class and the Jacksons were like a bunch of dirty gutter rats.

"Janet is proud of her family and how they came from nothing and became superstars.