Whitney Houston binged on cocaine, alcohol and pills in her final months, it has been claimed.
Insiders says that after months of sober living during 2011, the tragic star fell off the wagon.
A source told Star magazine: 'The last three months of Whitney's life were truly tragic.'
Whitney was found dead in the bathtub of her Beverly Hillton hotel in Los Angeles on the eve of the Grammy Awards.
Eyewitness told the publication about Houston partying at Hollywood club Playhouse on January 2.
'Whitney got buck-wild. She drank cognac and champagne and seemed completely out of it from the moment she arrived until the moment she left at 2.30am.'
The reports goes on to detail her partying at the luxury Beverly Hills hotel, the Beverly Wilshire.
'Whitney was in a lounge chair drinking pina coladas all afternoon,' another eyewitness told the magazine.
'Once in a while, she would get on her cell phone and start screaming at someone. She seemed almost manic at moments and practically unconscious the next.'
Her wild behaviour continued right until her death.
CNN anchor Don Lemon claimed he saw Houston doing somersaults in the pool just days before she died - saying she had been drinking alcohol from as early as 10am.
Houston will be laid to rest tomorrow after a funeral service at New Hope Baptist Church in her hometown of Newark, New Jersey.
Meanwhile Ray J, who was dating Whitney in the months before her death has finally broken his silence.
The 31-year-old released a statement that said: 'Over the past few days, I've tried to process the emptiness that I am experiencing. What my heart feels cannot be expressed in words. The world lost an icon, but I lost my close friend.'
Alluding to a nickname given to Whitney by her father he added: 'Nippy, I miss you so much!'
'You were so happy and full of love. Your smile will live in my heart forever.'