Ronda Rousey -- GEEKS OUT FOR 'STAR WARS' ... I Totally Dressed Up!

This is a good sign ... Ronda Rousey getting back to her old, fun, goofy self ... dressing up as a Storm Trooper to watch the new 'Star Wars' movie Thursday night.

Guessing the giant Boba Fett is her boyfriend Travis Browne ... 'cause he's huge.

So, is the force finally coming back for Ronda???

We'll find out soon enough ...