Kourtney Kardashian was missing sisters Kim and Khloé yesterday on National Sibling?s Day , especially since they were in Armenia on a highly publicized and special trip to learn about their roots. Kourtney, 35, explained on Instagram, ?I wish I was in Armenia with my sisters on #siblingsday! I didn?t end up going to Armenia because it was making me too anxious with three young children.? Yesterday Kim and Khloe visited the Armenian Genocide Memorial in Yerevan (the nation?s capital).??