Surprise! We're Married!

From secret ceremonies to whirlwind romances, see the couples (Jen & Justin! Mila & Ashton!) whose weddings took the world by surprise

JEN & JUSTIN

A few days shy of what would have been their three-year engagement anniversary, Aniston and Theroux tied the knot in a low-key ceremony at their Bel Air home on Aug. 5, 2015. "Guests were told it was a birthday party for Justin," a source tells PEOPLE. "Jen and Justin wanted to surprise guests and guests were certainly surprised."