It was a Jenner summit at Nobu Malibu last night!

Kylie, Kendall, and Kris Jenner met up with supermodel pal Hailey Baldwin at the seaside sushi joint. Kylie was the leader of the pack in a sexy, slinky black silk slip dress -- even Kris' "boyfriend" Corey Gamble took notice (see him checkin' her out?!). Kendall was dressed in a flowy pantsuit, while Hailey looked amazing in a pastel camo pant with silk blazer and her hair pulled back.

Hailey and Kendall had just hung out earlier in the day, attending hot Pilates together in West Hollywood. So why are they hanging out again, all-of-a-sudden? The girls used to be friends back in the day when they'd hang at Justin Bieber's Calabasas mansion and play with Nerf guns ... remember that? Of course there are rumors Kendall and Justin hooked up at one point, so perhaps that's why Biebs didn't join the group last night?

Well he was also busy getting the couple's new Beverly Hills mansion ready to move into. We spotted Justin in his SUV, chauffeured by his bodyguard, at the new $8.5M pad as some deliveries were being made. Looks like moving day is getting close!