Justin Theroux, Jennifer Aniston throw engagement party

Los Angeles: Actors Justin Theroux and Jennifer Aniston threw an engagement party at their Los Angeles home, almost four months after getting engaged.

The `Wanderlust` co-stars celebrated with close friends including Demi Moore, Ben Stiller, Tobey Maguire, Ellen DeGeneres and Portia di Rossi at the low-key bash, a leading daily has reported.

Theroux popped the question on a romantic dinner date to celebrate his birthday at a restaurant in August.

Aniston, 43, previously said that the proposal was a complete surprise.

"It is hard to pull one over on me, where I`m not like, `Hmm, you`re acting really strange.` It was ... A very covert operation," she said.