Article continues below advertisementMike "The Situation" Sorrentino, 43, shocked his fans after sharing a TikTok video, looking a bit unfamiliar to his loyal followers, leading him to share a second video explaining why he looked so different.The Jersey Shore star posted the initial video on September 10, where he promoted his upcoming book signing for Reality Check. Fans quickly took notice of his changed appearance, calling the difference "alarming."Article continues below advertisement'Didn't Even Recognize Him'Source: @itsthesituation/TikTokFans barely recognized Mike Sorrentino.