Jennifer Aniston Shows Off Massive Sparkler!

Posted Monday October 8, 2012 2:21 PM GMT

There have been myriad rumors regarding the engagement ring Justin Theroux used to propose to Jennifer Aniston, and now the mystery has been revealed!

On Saturday (October 6) the “Horrible Bosses” babe wore her huge diamond while out and about in Santa Fe, New Mexico with her handsome fiancé.

And while the full details on the gargantuan rock are yet to be revealed, suffice it to say Jen’s left hand must be building some serious muscle tone!

Ms. Aniston has been busy working on “We’re the Millers” in New Mexico, a film in which she plays a prostitute alongside drug dealer Jason Sudeikis.

Photo Credit: Getty Images