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\t\t\t\t<\/p>\n Kourtney Kardashian<\/strong><\/a> is reacting to her eldest son joining social media!<\/p>\n The 45-year-old The Kardashians<\/em>\u2018 star\u2019s 14-year-old son Mason Disick<\/strong><\/a> joined Instagram over the weekend with an official, verified account, and shared his first three posts<\/a>.<\/p>\n Kourtney<\/strong> shared his first post on her own Instagram<\/a> story, with her own reaction.<\/p>\n Keep reading to find out more\u2026<\/em><\/strong><\/span><\/p>\n \u201cmy first baby is on insta and I\u2019m not ok,\u201d the Poosh founder wrote, along with weepy eye emojis, tagging Mason<\/strong> and including a red heart emoji.<\/p>\n Two of Mason<\/strong>\u2018s aunts, Khloe Kardashian<\/strong><\/a> and Kim Kardashian<\/strong><\/a>, also commented on his first post. If you missed it, see what they wrote here<\/a>!<\/p>\n On Friday night (May 25), Kourtney<\/strong> and her husband Travis Barker<\/strong><\/a> joined several other family members as they went to support North West<\/strong><\/a> at her stage debut at the live concert event, The Lion King at the Hollywood Bowl<\/em>. Check out video of her singing\u2026<\/a><\/p>\n <\/span><\/p><\/div>\n