Dame Joan Collins reveals 'great grief' over death of 'phenomenal' sister
Dame Joan Collins told Jonathan Ross she was "still suffering" following the death of her sister, the novelist Jackie Collins.
The best-selling author was diagnosed with stage four breast cancer just less than seven years ago, and passed away in September.
Speaking on ITV's The Jonathan Ross Show, the Dynasty star said: "She kept it from most of her family, she kept it from our brother who lives in England and she only told her three daughters.
"She didn't want anybody to know, she didn't want pity.
"She wanted to carry on just as she always had, so since she found out that she had got it she wrote five books, five books in seven years!"
Dame Joan added: "She went to Australia twice, she went to New York three times, she came over to London for my investiture in March, she came over to London again nine days before she died, she did Loose Women, she was phenomenal, a phenomenal woman.
"Really amazing amazing amazing!"
After applause from the audience, Dame Joan revealed she learned of her sister's condition three weeks before she died.
"She told me that she had (cancer), but that she was fighting it and she had been taking treatment and we planned going to Hawaii for Christmas with all of our various children and grandchildren and so it was quite a blow, quite a blow.
"I'm still suffering.
"It's difficult for me to talk about really."
The 82-year-old stated: "I still haven't processed it totally and I think that grief, great grief, is something that takes a while to process and you never get over it, you just learn to live with it."
Dame Joan plans to celebrate her sister's life: "I've never seen such an outpouring of love and attention when she passed away, which was only five weeks ago, six weeks ago.
"The headlines, she got the cover of People magazine in New York ... I've never heard of anybody getting that, an author."
She was also candid about their relationship: "We weren't estranged we just weren't as close as we used to be.
"I was going out with somebody who she loathed and he didn't like her very much and so we sort of didn't spend a lot of time together."
The Dame also spoke about her god-daughter, actress and model Cara Delevingne: " She's very cavalier, she's a lovely girl and I'm very fond of her and she's an amazing actress!"
American actor, producer and director Danny DeVito joined the sofa and shared his memories of both the late Robin Williams and working with One Direction.
"It was a lot of fun," he said.
"I had a great time, the boys are very, very spirited and fun!"
Award-winning actress Sheridan Smith spoke about her acting career and love life.
" I've read so many lies about me dating this person and that person, every gay friend of mine I've been out with has been my new 'mystery man'.
"The best one was, I stepped out for a dinner date with my 'mystery man' - it was my brother!"
The Jonathan Ross Show is broadcast on Saturday November 7 at 10.10pm on ITV.