
Baillie was at the centre of the BBC's 'Sachsgate' scandal which saw Brand quit his radio show and Jonathan Ross suspended from BBC1.
She has now spoken out to warn the lothario's latest conquest, US singer Katy Perry, she had better watch out.
She said of Brand: "I don't think he's capable of manogomy. I was part of his conveyor belt of women coming through his door.
"If you go to one of those famous bars or clubs in London every second girl in there knows what Russell is like in bed from personal experience."
Baillie, 23, hit the headlines in January this year when loud-mouth Brand involved her grandfather - veteran actor Andrew Sachs - in a prank on his Radio 2 show.
Together with Ross, he left a message for 78-year-old Sachs, bragging how he had slept with his grandaughter, Baillie.
In the weeks that followed, it was revealed Baillie worked as a burlesque dancer and model with a group called Satanic Sluts, which her family had not known.
Baillie said: "A lot of damage was done to my family over the story and a lot of stuff came out about me that my family didn't know.
"I was very angry with him for a long time but I'm over it now."
Baillie has now advised I Kissed A Girl singer Perry to be on her guard.
Baillie said: He may have changed in the past year, but if he hasn't then he should wear a warning sticker in public.
"My advice to Katy is - have an awesome time which I'm sure you are having but be careful. Katy is on course to having her heart broken if Russell hasn't changed - I hope he has."

This article has 2 comments
I love how the article says she's Russell's "ex"...wasn't she one of his many one night stands?
By Cowboy Casey. Posted November 15 2009 at 5:21 PM.
Mmmm yes love, he caused your family a lot of pain... Id believe you if you weren't here with your boobs hanging out.
Somehow I think your grandfather would be sadder at this "article" than some idiots ringing him up saying silly things.
By Fiona. Posted October 24 2009 at 2:44 PM.