Of course, it all started when the internet was doing what it does best: sleuthing.
One fan was trawling through the archives of Cole's Instagram (love your work) when they discovered this throwback shot Cole shared of his dad back in 2015 and holy sh*t, there's one helluva family resemblance.
Gird your loins people, 'cos here's Matthew Sprouse:
Cole even sounds pretty shook at their likeness, writing the caption "Here's a #tbt to my pops and I (could be Dylan???). Uncanny how much we ended up looking like him."
Meanwhile, here's all we have to say on the matter:
For comparison, here are the boys:
The takeaway? The Sprouse family gene pool is mighty fine.