It's a big day, folks!

Kourtney Kardashian got all decked out in leather pants and a velvet top for dinner with a female friend at Delilah in West Hollywood last night, and she caught us off guard by doing something she never does... smile! The reality star must be in a good mood lately now that she's basically full-on back together with Scott Disick, and we don't blame her. The Lord is a bona fide hottie!

The mother-of-three was peppered with questions about whether Kim and Kanye were going to divorce as she made her way out of the restaurant, but she decided to stay mum. Probably best, since all signs point to that outcome. Our photographer also asked her about that nasty trademark spat between the K sisters and Blac Chyna, and that's when she flashed us her little grin.

The family's attorney filed to block the video vixen's use of the name Angela Renee Kardashian, but now they're backpedaling and claiming it was all a big misunderstanding and comes down to basic legal procedure. TMZ reports that the issue was "a simple mix up" and they were not "trying to single her out."

"Chyna filing and using their last name takes some time and discussion. They are hoping to resolve it amicably, the girls, because they do love Chyna. The girls are just protecting their interests because that is their brand. It’s a complicated business issue," a source explained to Us Weekly.

There's no shortage of drama, that's for sure!