DiCaprio Slashing Suspect -- Finally Behind Bars

7/30/2010 10:30 AM PDT

DiCaprio Slashing Suspect -- Finally Behind Bars

TMZ has learned the woman accused of slashing Leonardo DiCaprio's face open with a drinking glass back in 2005 has been extradited back to the United States ... where she will finally face justice.

Sources tell us 40-year-old Aretha Wilson took a flight from Canada to Los Angeles last night accompanied by law enforcement officials.  We're told she's currently in custody awaiting trial.

As we previously reported, Wilson is accused of hitting DiCaprio in the face during a house party in the Hollywood Hills in 2005. The party was at the home of Rick Salomon -- Paris Hilton's sex tape partner.

Authorities claim Leo needed 17 stitches to close up his face and ear.

Wilson -- who had been arrested in L.A. and charged with assault with a deadly weapon -- fled the country after the alleged attack.