'Road Trip' Actress -- Dead At 36

5/11/2011 8:41 AM PDT
Mia Amber Davis -- the big girl who seduced DJ Qualls' character in "Road Trip" -- has passed away ... this according to her friends at Plus Model Magazine.

The details surrounding Mia's death are still emerging ... and so far, no cause of death has been released.

According to MediaTakeOut.com, 36-year-old Mia is survived by her husband Mike.