Ryan Seacrest fans are concerned about the “Wheel of Fortune” host after a clip from the show went viral on Instagram last week. In the Jan. 23 footage, the 51-year-old congratulated Vanna White on her recent marriage to John Donaldson earlier this month. “That’s Ryan Seacrest??? 8 Ryan Seacrest fans are worried about the “Wheel of Fortune” host over his slimmed-down appearance on the show on Jan. 23. wheeloffortune/Instagram8 On Jan. 23, the 51-year-old celebrated co-host Vanna White’s marriage. wheeloffortune/InstagramAnother claimed, “Ryan Seacrest looks like an entirely different human.”Some theorized the multi-hyphenate was being portrayed by an actor and asked the “real Ryan Seacrest [to] step forward,” noting, “It doesn’t even sound like Ryan never mind not looking like him.”One netizen wrote, “Ryan Seacrest looks like a shell of his former self.