THE Daily Record told how Jillian and Brad had a week-long fling after she caught the eye of the star in 1994.
At the premiere of the Guy Ritchie movie Snatch in 2000, Brad had refused to do any interviews.
But he made an exception after hearing Record man Mark McGivern's Scottish accent, saying: "You put this story in your Daily Record."
Brad stunned our reporter by sitting him down and recounting details of his time in Glasgow.
He talked of The Tunnel nightclub and told how he had home-made soup while babysitting with Jillian at her mother's house in Maryhill.
During their time together, they hung out at Danny Kane's pub, where Jillian worked, and stayed at The Marriott hotel and One Devonshire Gardens.
The pair also went to a party in Drumchapel, where Brad spent most of the time on the phone to a young cancer sufferer, who was related to someone at the party.
The Glasgow adventure even formed the backbone of an in-depth profile on the star, featured in the December 1994 edition of Rolling Stone magazine.
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Pitt told the Record: "Jillian was a lovely girl."
Jillian said: "I was working in Danny Kane's pub in the morning and I became aware of someone looking in the window at me.
"Two guys came in and sat down and you could tell right away they were a bit different.
"Brad had asked my name from another bar worker and was shouting over at me.
He couldn't even pronounce Jillian right.
"Being honest, I didn't remotely fancy him at first. I thought he looked a bit weird."
Jillian said the penny soon dropped about the actor's identity.
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Brad, who had been fending offf the attention of other Glasgow beauties, told Jillian: "You're the only girl I'm interested in."
Jill said: "We hit it off and it was a roller-coaster few days. But it's not something I ever wanted to brag about.
"We had a great time when we were babysitting for my niece Emma and Brad loved my mum's soup.
"He was a lovely guy and we had a good regard for each other, I would say."