The party went down at The Classic Cat restaurant in WeHo.
Video from the party shows Khloe and Tristan standing in the back of the room during a performance by Giveon. Screenshots from The Shade Room also show the two of them together at the event.
They arrived separately … Tristan in a black Rolls, and Khloe in a black Escalade.
Adele and Rich Paul were among those celebrating, along with a slew of NBA stars, including Chris Paul, Chris Bosch, Russell Westbrook and Carmelo Anthony.
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Khloe was hardly secretive, posting a shot of her outfit (above).
The official party line we’ve been getting from the fam … Khloe and Tristan are getting along just fine as co-parents, but they’re not together. BUT … They’ve been spending a fair amount of time together recently … so the jury is out.