For most, the 66th year of life isn't particularly meaningful; you've made it past senior status, may or may not qualify for the Senior Special at Denny's, and very likely spend most of your days chasing after grandbabies while reminiscing about "the good old days."
The reality star's male-to-female transition went public in 2015, a grand photoshoot in Vanity Fair serving to introduce Cait to the world. This transparency was quickly followed by a documentary called I Am Cait, which reflected the trials and tribulations Jenner faced as she faced the realities of both transgender life and familial strife.
Now, though, it seems that strife is far behind Jenner.
On Tuesday, the birthday girl and her Kardashi-Klan hit Villa restaurant in Woodland Hills to celebrate.
Kim, Kourtney, and Kylie were in attendance.
Jenner looked stunning herself, donning a sheer, flowery top with matching scarf and leather pants.
A transition as public and long-coming as Jenner's can't be easy for any family. But if there's one thing the Kardashian-Jenner fam has demonstrated, it's that that family comes first.