Michael Jackson's lawyers have labelled a number of big names in the music business as hardcore dug users to support a lawsuit against Lloyd's of London.
The Michael Jackson Company (MJC) is suing insurance syndicates over their refusal to pay-out $17.5m (£11m) under an insurance policy that concert promoters AEG took out in the event that the Thriller hit maker could not perform for the "This Is It" tour.
Jackson died on 25 June 2009 after receiving a lethal dose of the anaesthetic propofol from Conrad Murray.
The late King of Pop was in the midst of preparations for a series of comeback concerts at the time of death.
According to TMZ, Lloyd's has rejected the claim on grounds that AEG and the singer defrauded insurers by failing to reveal that Jackson was addicted to prescription drugs.
"The insurance case continues against the Michael Jackson Company LLC for, among other things, rescission of the policy due to nondisclosures of Michael Jackson's prior drug use," Paul Schrieffer, attorney for the insurance underwriter said in 2012.
In public documents, obtained by the celebrity site, MJC argues that stars such as Spears and Aerosmith were all accepted for similar policies despite being known drug addicts.
Houston was discovered dead in her Beverly Hills hotel room in February 2012. The coroner ruled that she accidentally drowned in a bathtub because of heart disease and chronic cocaine use.
Spears was reportedly addicted to amphetamines at the time of her public breakdown in 2007, during which she shaved her head.
Jackson's lawyers are now planning to investigative the kind of treatment other stars received to determine whether he is being unfairly singled out.