A pal of the teenager informed Rihanna about the tragedy over the social networking site, writing in a message, "Karen's parents told me that she died listening (to) The Last Song off Rated R."
The singer has now paid tribute to the tragic teen, writing, "Karen we miss u forever... One of my biggest... fans died today in a car accident!!! Gone but never EVER forgotten!!!! She was only 17 Dear Karen."
Rihanna also then 're-Tweeted' a number of messages from her fans who also paid tribute to the teenager.