Khloe Kardashian: This is What Divorcing Looks Like

Khloe Kardashian showed up at a family shindig ... looking like she's fully back in the game after filing for divorce.

The family weirdly went to Nobu in Malibu to celebrate Scott Disick's birthday ... with 'KUWTK' cameras rolling. It's unclear why the family is embracing him ... but on the other hand it's perfectly clear, right?

TMZ broke the story ... Khloe filed for divorce from Lamar Odom Thursday ... her second attempt.