The bisexual model blasted Tulisa in front of her other housemates, admitting that she loathes the singer after they reportedly fell out during a holiday in Marbella.
Sallie, 26, said in the reality house: 'I know Tulisa. She gives the worst b*** jobs.'
Rant: Sallie Axl branded Tulisa 'crap in bed' to her housemates in Big Brother
Indeed, it wasn't just the N-Dubz star's bedroom technique that Axl commented on, but also her recent arrest - along with long-time friend Mike GLC - on suspicion of supplying cocaine.
A source close to the Big Brother contestant told the Daily Star: 'She doesn't like Tuilsa.'
Spreading the word: Sallie shared all her gossip about Tulisa to the house on the Channel 5 show
Bad to worse: Tulisa has already suffered the
indignity of having a sex tape leak, and been arrested, so this latest
attack will be certainly unwelcome
The 24-year old Camden-born singer will no doubt find this latest attack unwelcome, after being arrested on suspicion of dealing class A drugs following a tabloid report about an alleged cocaine deal.
And prior to that she suffered the indignity of having a private sex video shared on the internet, showing Tulisa performing a sexual act on an ex-boyfriend.
Mail Online contacted Tulisa's representatives for comment.
Lesbian love affair? Sallie wants to engage in a romance with housemate Hazel O'Sullivan
Getting close: The two women have become pals since the show began last week
Spicing it up: Sallie hopes her little clothes and sexy plot lines will secure the viewers' votes
According to the Daily Star, Sallie has already asked for a hot tub to be installed into the garden so that she can get steamy with Hazel in the water.
Their friendship blossomed over their mutual belief that there were no hot men in the house - apart from Daley Ojuederie who is in a long-term relationship. But as the boxer is a close friend of Tulisa's it's unlikely he and Sallie will be s[parking up a friendship in the house.
Sallie's outburst comes after she had a catfight with Gina Rio, 24, who called her a 'skidmark of society.'
The socialite said the tattooed model was jealous of her but, Sallie retorted: 'Your ugly personality overlaps your face.'
Big mixer: Sallie arrived looking like the oldest unknown member of Little Mix