Speculation is swirling about which A-list actress no longer speaks to Reese Witherspoon after an awkward ... "I thought it ...

Reese Witherspoon's video from over a decade ago, where she allegedly disses Blake Lively, is now suddenly going viral.

Though Reese Witherspoon hasn't judged a tighty-whitey contest or attended Harvard, the actress has collected a slew of accolades as one of Hollywood's most influential stars. What? Like it's hard?