Tanya Brown -- whose sister, Nicole Brown, was slain in 1994 -- opened up to TMZ about the eerie similarities between Rob and Michele Reiner's killings and the brutal murder of her sister, which sparked the infamous O.J. Simpson murder trial.
Tanya tells TMZ ... she saw the words "murder in Brentwood" posted on social media Sunday night, which understandably conjured up old, terrible memories.