Reese Witherspoon -- Fist Full of Engagement Ring

1/4/2011 9:00 PM PST
Reese Witherspoon is officially a rock star -- the "Legally Blonde" actress hit Beverly Hills today ... and for the first time ever, she brandished her enormous new diamond engagement ring in public.

34-year-old Reese and her boyfriend, CAA agent Jim Toth, announced their engagement last week.

Mazel tov!