The singer/actress passed away on 9 December, 2012, after the Learjet she was travelling in crashed in Mexico, killing four members of her entourage and the plane's two pilots.
Monday (09Dec13) marked the anniversary of the tragedy and the co-stars of her debut film, independent drama Filly Brown, have shared their thoughts and feelings.
Recalling Rivera's generosity on the set of the movie, which screened at Utah's Sundance Film Festival last year (12), Olmos tells People.com, "We were working with a very tight budget and no one was getting paid. Jenni found out that our still photographer was working with no pay and asked that her pay cheque go to him. She was always trying to help others. I miss her so much!"
Meanwhile, Rodriguez reveals she has been keeping Rivera's memory alive every day for the past 12 months, saying, "I remember everything about Jenni. I've spent the past year doing everything in my power to not forget a thing. She was a powerhouse. From her soft-spoken voice, when you first met her, to her informal, tender, love and care when she takes you in.
"Jenni was everything her fans believed she was - she was everything they wanted her to be: open, honest, loving, real, humble, talented, a down a** chick and, most importantly, a voice for those that didn't have a voice. I pray I can one day be a fragment of what she was and what she still remains. Her heart never left and it's with the utmost honour that I get to share these words of a heart I truly admired and adored."
Mexican authorities investigating the crash declared last week (ends06Dec13) that technical problems and possible pilot error were to blame for the accident.