Piers Morgan has taken to Instagram to document his eldest son Spencer's transformation over the years - all the while poking fun at their beloved football club, Arsenal.MORE: Piers Morgan's two family homes with wife Celia are paradiseThe former GMB star shared two snapshots - one taken recently at the Emirates Stadium and a second captured some ten years ago.
He joked: "What the last decade of following Arsenal does to a man."WATCH: Piers Morgan reveals an unseen part of his London homeUnsurprisingly, his post sparked a big reaction from fans.
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