Khloe and Kim Kardashian were involved in a minor crash after the vehicle they were in slid off a road and into a ditch in the US state of Montana.
The stars of Keeping Up With The Kardashians had been enjoying a skiing trip with their half sister Kylie Jenner when the crash occurred.
Montana highway patrol captain Mark Wilfore said the accident occurred before noon on a road between Bozeman and Belgrade, where the Bozeman Yellowstone International Airport is located.
Capt Wilfore said he did not know their destination and said a third person in the vehicle was not hurt and was not identified.
He said there was no damage to the vehicle, which was pulled from a ditch and driven away. He said no citations were issued.
Capt Wilfore says the accident occurred when the GMC Yukon being driven by Khloe Kardashian hit a patch of black ice and slid off the road on a two-lane road.
Both sisters have taken to Twitter to thank God for keeping them safe, with Khloe writing simply: "God is good."
Kim tweeted: "Thank you God for watching over us and keeping us safe."
She's also been sharing pictures from the holiday over the last few days: