Jennifer Aniston showed off her new beau Justin Theroux to friends at a birthday party for Ben Stiller's wife Christine Taylor on Wednesday night (03Aug11).
The former Friends star has been enjoying a new romance with the actor/screenwriter, who she brought with her to Hawaii on Monday (01Aug11).
The new couple took time out of its romantic vacation to visit Aniston's Along Came Polly co-star Stiller as he celebrated his actress wife's 40th birthday at an oceanfront villa in Kauai.
Aniston was snapped introducing Theroux to Taylor as they arrived at the venue, and the newly-introduced pair hugged after he presented her with wrapped gifts.