We’re seeing double — and it’s hotter than Rio de Janeiro.

In the single best fashion moment of the VMAs on Sunday night, Olympic gold medalist Michael Phelps arrived at Madison Square Garden looking like the long-lost fourth Jonas Brother.

At the award show, both the swimmer and sexy singer Nick Jonas wore dark jackets, white shirts, short haircuts and brooding stares that had viewers looking for the nearest lap pool to cool down in.

From a distance, you’d think the dashing duo were related.

Let’s talk next steps, boys: a GQ pictorial, a buddy road-trip comedy, a duets album, a synchronized swimming team.

Whatever you do, guys, Phonas is happening.