Ex-'Amazing Race' Finalist Vanessa Macias -- Boozing at Jason Aldean Concert Before DWI Arrest

Jason Aldean's been dragged into another drunken controversy ... because ex-"Amazing Race" finalist Vanessa Macias told cops she boozed up at the country singer's concert before her DWI arrest last week.

According to the San Antonio police report, obtained by TMZ, 32-year-old Macias admitted to cops she drank three vodka sodas at the Aldean concert on Thursday ... then hit up a local strip club with a friend.

We did the research -- the strip club in question features FEMALE dancers ... just in case you were wondering.

As we reported, Macias was arrested around 2 AM Friday morning after police pulled her over and say they detected a strong odor of alcohol on her breath.

According to the report, cops say Macias was driving erratically on a highway and failed to make a turning signal, so cops initiated the traffic stop. She was arrested soon after on suspicion of DWI.