Stephanie Beacham entered the 'Celebrity Big Brother' house to help her daughter, it has emerged.
The 62-year-old actress, who is best known for playing Sable Colby in 'Dynasty', went on to the reality show to use the £100,000 (€111,228) fee to assist Phoebe, 35, in her ongoing battle against drug abuse.
Phoebe said: "My mother saved my life. If it wasn't for her, I wouldn't be here today.
"I owe her so much, I was a total wild child, but mum has always been there. She has spent literally thousands of pounds of her hard-earned money getting me out of all kinds of scrapes."
Phoebe began smoking marijuana at 18 before moving on to harder drugs including LSD and cocaine.
In 2009, the problem became so bad that Phoebe attempted suicide.
She said: "Mummy knew something was wrong and kept asking me. Eventually on one visit to the US I admitted I'd been taking too many drugs. She was so supportive and paid for me to have therapy."
Discussing her younger life, Phoebe - who has been clean for a year - also revealed Stephanie would fly her and her sister Chloe out to Hollywood in school holidays to meet the 'Dynasty' cast.
She told the Sunday Mirror newspaper: "She worked so hard, getting up at 4am to be on set at 7am. But it was so exciting meeting huge stars. I remember serving Joan Collins vol-au-vents at Charlton Heston's New Year Party."
Meanwhile, billionaire Donald Trump's ex-wife Ivana has entered the 'Celebrity Big Brother House'.
The former competitive skier was revealed to the other contestants through a magic trick, with 'Thong Song' singer Sisqo unaware that fellow housemate Lady Soverign – otherwise known as Sov - would disappear and be replaced by Ivana.
Sov later appeared from the Diary Room with two bottles of Champagne to celebrate Ivana's arrival.
Ivana, 60, demanded a mosquito net around her bed before she entered and is the only contestant that is allowed to wear a watch.