'Legally Blonde' Chihuahua Dies

Moonie, the dog who shared the big screen with Reese Witherspoon in "Legally Blonde" has died.

Reese just broke the ruff news ... posting a pic of her and Moonie, who played Bruiser Woods. She said, "I will never forget all the days we spent together ... I'm sure his tail is wagging in the sky."

Moonie was a rescued chihuahua before landing the "Legally Blonde" gig ... and was good pals with Gidget, the Taco Bell dog.

He was 18.

#RIPBruiser