141572096DT039_Rob_Kardashi.JPG141572096DT004_Rob_Kardashi.JPGDenise Truscello/WireImage

The Kardashians (well, most of them!) jetted to Las Vegas to celebrate Rob's 25th birthday, and it looks like the family had a blast at 1 Oak at the Mirage Hotel. Kourtney wasn't able to attend as she was doing a live QVC event, and we aren't sure why Khloe wasn't able to make it, but her birthday tweets definitely seemed to make up for her absence.

Kim tweeted a half dozen shots as the evening went on, and while Kylie, 14, and Kendall, 16, weren't allowed to party at the club, they still got all dolled up for dinner at Stack Restaurant & Bar.

While the Kardashians could have kept going, it looks like they put an end to the festivities pretty early. Well, for Vegas, anyway! This morning Kim tweeted, "3am flight back home! What a fun night!"