Teen Mom star FARRAH ABRAHAM’s night of debauchery!

Teen Mom Farrah Abraham got wasted in a seedy Omaha nightclub drinking with a fake I.D., then got into a drunken brawl – with her own sister!

Farrah was launched from obscurity to fame on the hit show, which follows the 19-year-old single mom in her hometown of Council Bluffs, Iowa, as she struggles to raise her daughter after her baby’s father was killed in a car wreck.

"My little sister is a spoiled, thankless brat and needs to seriously grow up – not just for herself, but for her baby daughter!" declared Ashley Danielson, 23, Farrah’s half sister, in an exclusive ENQUIRER interview.

"The ‘Teen Mom’ producers like her because they know she will always bring drama no matter what!

"But what they don’t know is Farrah has turned into a monster!"

FOR THE FULL STORY and to get ALL the details of Farrah’s boozy slugfest pick up the new ENQUIRER – on sale NOW!