Kourtney Kardashian took to Instagram on Friday, April 10 to explain why she skipped her family's vacation to their ancestral country, Armenia, Us Weekly reports. 

Friday marked the celebration of National Sibling Day, and while her sisters, Kim and Khloe, traveled to Armenia along with Kim's husband, Kanye West, Kourtney chose to stay behind due to her anxiety.

Kourtney explained she was anxious about leaving her three small children at home while traveling to Armenia. Therefore, she opted to stay with her kids, Mason, 5, Penelope, 2, and Reign, 3 months, and her boyfriend, Scott Disick.

The following day, Kourtney posted another Instagram photo of the movie Cinderella playing on-screen, revealing that she and her family were spending quality time watching the Disney movie.

We finally saw Cinderella. Beautiful and magical movie.  A photo posted by Kourtney Kardashian (@kourtneykardash) on Apr 11, 2015 at 1:54pm PDT

Kourtney's brother, Rob, also did not attend the trip to Armenia due to his own personal anxieties and self consciousness, Us Weekly reports.

Kendall and Kylie Jenner, the youngest sisters of the Kardashian-Jenner clan also stayed behind for the Armenia trip and opted to celebrate National Sibling Day at Coachella instead. The two are not Armenian, as Bruce Jenner is their father. 

Kylie posted an Instagram photo of herself and Kendall enjoying their time at Coachella.

However, in her Instagram caption, she confessed she missed being around her eight other siblings on National Sibling Day.

 National Siblings Day... Wish I could be with all my 8 other older sibs on this day xo

A photo posted by Kylizzle (@kyliejenner) on Apr 10, 2015 at 5:49pm PDT

While making an appearance on the first day of Coachella activities, Kylie sported electric teal hair with nude shorts, a crop top, and long vest.

Kendall wore high-rise denim shorts, a bikini top and brown vest with a statement necklace, says the Daily Mail. Meanwhile, their half sisters, Kim and Khloe, have equally been enjoying their time in Armenia.

Us Weekly reports that Kim and Khloe have met the Armenian Prime Minister and visited the Armenian Genocide memorial. Following their meeting with the Armenian Prime minister, Kim took to Instagram to share the special moment with her fans.