The public relations mogul was mysteriously shot dead while driving through Los Angeles in the early hours of Tuesday (16Nov10) after attending the premiere of Cher and Christina Aguilera's new film Burlesque.
Chasen's brother, director Larry Cohen, and top client composer Hans Zimmer were among the first celebrities to publicly mourn the publicist's death and now Warner Bros. bosses have done the same in the pages of Friday's (19Nov10) Variety.
The dedication mourns the loss of "an extraordinary woman, whose kind spirit, energy and passion for life has been an inspiration to all".
It continues, "You were truly one of a kind. We feel proud and privileged to have known you."
Police have launched an investigation into the shocking crime, but have yet to name a suspect or motive.
Rewards totalling $125,000 (£83,300) have been offered for information leading to the killer's conviction.
The public relations mogul was shot multiple times while driving her Mercedes-Benz car through Los Angeles on her way home from the premiere of Cher and Christina Aguilera's new film Burlesque in the early hours of Tuesday (16Nov10).
Police have launched an investigation, but are so far still hunting for a suspect or motive.
Harold Matzner, chairman of the annual movie event in California, has now announced a cash reward for information which leads to the arrest and conviction of the person responsible for Chasen's death.
A statement from Matzner reads, "Famed Hollywood publicist, Ronni Chasen, has been my partner in selecting all honorees and presenters for the Palm Springs International Film Festival Awards Gala for the past 10 years. Ronni handled all negotiations with the studios and she and her team made all of the arrangements to bring the celebrity honorees to Palm Springs for the event.
"A very good lady, a good friend... and a genius at her craft... Her death is very, very sad and mystifying... Ronni has played the most important part in the Awards Gala's success. She will be very missed by all in the festival family... and by me especially."
The respected PR ace, who has helped promote a series of celebrities and films - including Driving Miss Daisy - was shot several times while driving her Mercedes-Benz in the early hours of the morning. She had been working at the premiere of Cher and Christina Aguilera's new film Burlesque just hours earlier.
As part of the hunt for her killer, investigators removed computer equipment from her firm, Chasen and Co., later on Tuesday.
According to Los Angeles police lieutenant Tony Lee, no suspects or motives are known at present.
The public relations mogul was shot multiple times while driving her Mercedes-Benz car through Beverly Hills on her way home from the premiere of Cher and Christina Aguilera's new film Burlesque.
Her death has shocked the showbiz world, and many stars have been quick to pay tribute to Chasen, including her screenwriter/director brother Cohen.
He says, "She was my sister and best friend and we shared so many wonderful times together. Ronni was a loving and caring person who treated her clients like they were her own family."
Producers Lili and Richard Zanuck worked with Chasen on the Oscars campaign for Driving Miss Daisy - which went on to win the 1989 Best Picture honour - and were devastated to learn of her death.
A statement from Richard reads, "Lili and I are shattered by the unthinkably sad news about Ronni. She has been a loving and dear friend for so many years. To think of not being able to get her on the other line of the phone is unimaginable. She was the best publicist in the business in our opinion whose tireless and determined energy combined with her love of movies made her one of a very special breed."
Film composer Hans Zimmer, who was also a client of Chasen, adds, "I'm profoundly sad, devastated, mad, incredulous and lonely. She was radiant. She knew everybody in the room. She took Chris Nolan over to the next table and introduced him to George Lucas. I was watching her (and) standing there listening to them and I thought, 'There's my friend Ronni, introducing two great directors to each other. She's on top of her game.'"
Police have launched an investigation into Chasen's death.
The PR queen's roster of talent included tragic actress Natalie Wood, composer Hans Zimmer and movie producer Richard D. Zanuck.
She was shot multiple times while driving her Mercedes-Benz early on Tuesday (16Nov10).
Police have launched a major search for her killer.