Kylie Jenner & Tyga: 14-Yr-Old Goes On Attack for Alleged Cheating Story

A magazine report about Tyga cheating on Kylie Jenner with a 14-year-old has drawn the ire of attorney Gloria Allred ... and she's about to blast the whole story.

Allred is representing the unidentified girl, who was mentioned in an OK! story, published last week, which said Kylie had busted her BF texting the 14-year-old. Allred says the story made it seem like the teen was excited to be part of "an alleged sex scandal."

Allred claims OK! portrayed the teen in a "false light."

No mention of a lawsuit yet ... but Gloria, the girl and her mother will hold a news conference Monday afternoon to tell their side of the story -- and we'll have it for you on a livestream.