Jennifer Aniston, Justin Theroux marry in secret backyard wedding

A huge house party that actors Jennifer Aniston and Justin Theroux held on Wednesday was really a surprise wedding, according to entertainment media reports.

The pair, who first met on the set of Tropic Thunder in 2008 and co-starred in 2012's Wanderlust, tied the knot at home before a gathering of close friends and family, according to People magazine, UsWeekly and gossip site TMZ.

Aniston's Friends co-star Lisa Kudrow, comedian Chelsea Handler and radio host Howard Stern were among the celebrity pals said to have attended the private gathering in the backyard of the couple's Bel Air, Calif., home. The buzz initially was that the party was to be a surprise birthday bash for Theroux.

Aniston, 46, and Theroux, 43, were engaged in August 2012 after datingfor more than a year.

Aniston is one of Hollywood's biggest female stars, with recent credits including We're the Millers, Cake and Horrible Bosses 2.

Theroux currently stars in television drama The Leftovers and has previously appeared on TV's Parks and Recreation, John Adams and Six Feet Under.

Aniston was previously married to actor Brad Pitt, whom she divorced in 2005. It is the first marriage for Theroux.