Hailey Baldwin turned 19 last night and all her girlfriends were at Diddy's Birthday party and not HER dinner party at Katsuya in Hollywoodio…Hmmm.. And it wasn't like Kendall, Kourtney, Gigi and Cara Delevigne were not in town. They were at a Mansion party somewhere in Beverly Hills with Diddy! And the Instagram pictures where the foursome looked like they were having a 'ball' were posted the same time Hailey was having her B-day dinner in Hollywood (a 10 minute drive away…well 20, if you include traffic and shitty L.A. drivers).

So what's the deal? At least all her other 'true' friends showed up like: Vine Stars Aaron Carpenter, Cameron Dallas, Christian DelGrosso, actress Maia Mitchell, and Kyle Massey…FYI: I had no idea all those people even knew Hailey Baldwin…