V. Stiviano DENIED at Hollywood Hot Spot (VIDEO)

Watch and listen carefully to this clip and you'll hear the timer expire on V. Stiviano's 15 minutes of fame.

Donald Sterling's BFF did her best Saturday night to get into Hollywood hot spot 1Oak, but security wasn't having it. She tried phoning a friend, but that didn't seem to work either.

Maybe the staff just didn't recognize her without her trademark visor -- but V. should clearly stick to places where she's V.I.P. ... like Sterling's house.