Rob Kardashian turned 29 on March 17, and after celebrating with girlfriend Blac Chyna on Thursday in Legoland, his whole family threw him a massive St. Patrick's Day-themed party in Malibu on Saturday night. Well, almost everyone. Khloe tweeted that she was sick, and Caitlyn Jenner was a no show as well. Interestingly enough, Blac wasn't there either. Was this bash just for the show? After all, Khloe and Rob are superclose, and we can't imagine he'd be happy about Blac being shut out of the celebration...

The Kardashians had dinner at Nobu Malibu, and they noshed on a massive cake with a vintage photo of Rob's face screened on the frosting. "It really seemed like a fun celebration," an eyewitness told People. "There was no tension and everyone enjoyed themselves. They all sang Happy Birthday and gave Rob a cake with a picture of his face. Rob looked and seemed very happy."

Momager Kris Jenner was accompanied by steady beau Corey Gamble, and Kylie brought Tyga along for the fun too. Kim Kardashian and hubby Kanye West brought daughter North, but left baby Saint at home, and Kourtney Kardashian and Scott Disick brought their oldest kids, Penelope, 3, and Mason, 6. Naturally the whole fam documented the soiree on Snapchat, with Kim posting a hilarious video of Scott, Kanye and Rob trying to pose for a selfie when she was secretly recording a video!