media_removed_toofab 2013

Good looks run in the Theroux family!

Jennifer Aniston's fiance Justin Theroux was spotted out in NYC on Monday ... but it was his younger brother Sebastian who definitely caught our eye.

With their brooding good looks, it's clear Justin, 41, and Sebastian, 24, share the same gene pool -- and, with those matching leather jackets, maybe even the same sense of style.

But in the battle of the brothers, which one is hotter? Vote in the poll below, then see if you can match more stars and their less famous siblings in the gallery above!

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