Joan Collins tweets a tribute to her sister. In an interview in People she says:
She was my best friend. I admire how she handled this. She was a wonderful, brave and a beautiful person and I love her.
Farewell to my beautiful brave baby sister. I will love you and miss you forever. Rest in peace. pic.twitter.com/pPR3KRRjUU
— Joan Collins (@Joancollinsdbe) September 20, 2015