Arguably the biggest days in Brittney Griner's life have finally arrived -- her drug case trial in Russia has begun ... and it appears she chose to send a loud and clear message with her fashion for the monumental moment.
Cameras at a courthouse in Moscow captured Griner in the minutes before the trial officially began Friday morning ... and they showed the WNBA superstar rockin' a Jimi Hendrix T-shirt for the occasion.
While we're sure Griner is a big fan of the musician's work .