Nia Long is showing some serious love for her fiancé Ime Udoka ... praising her soon-to-be hubby on becoming the new head coach of the Boston Celtics!!
The Cs officially announced the former Brooklyn Nets assistant as Brad Stevens' successor at a press conference on Monday ... and the "Boyz n the Hood" actress couldn't help but gas up her man.
"Today you are officially the Head Coach of the Boston Celtics," Long said on IG. "Big love to the entire staff for the warm welcome.