Kim and Kourtney Kardashian arrived at Los Angeles International Airport on Wednesday, and the ladies looked casual yet stunning as they breezed through LAX.

The sisters were in Iceland to celebrate Kourtney's 37th birthday yesterday, but that's not the only reason they were there! Kim's hubby Kanye West was shooting a music video in the country, and the group was joined by rapper The-Dream, along with PR pals Jonathan Cheban and Simon Huck.

While the stars and their entourage posted a number of shots from dinner and outdoor adventures, they had a little bit of a scare while riding in a helicopter earlier in the week. Apparently there was a rattling noise aboard the aircraft shortly after the group took off, which forced them to make an emergency landing on a golf course. "We found the problem!" Kim revealed on Snapchat. "A seatbelt was hanging out that was making a rattling noise."

In other news, Kim was asked if she would consider being a bridesmaid at brother Rob Kardashian and Blac Chyna's wedding. Her response? You'll have to check out the video below to see if she weighed in on that...