Jennifer Aniston Gushes at 'Wanderlust' Premiere: "I Was Pretty Much Having a Ball"

Who's the fairest of them all? Well, that would be Jennifer Aniston! America's sweetheart dazzled at the Wanderlust premiere last night.

Although she didn't walk arm-in-arm with co-star and beau Justin Theroux, she simply beamed with happiness in a strapless tweed dress.

OK! NEWS: JENNIFER ANISTON POSES SHIRTLESS WITH PAUL RUDD FOR SEXY GQ COVER — "WE'VE MADE OUT FOR DECADES" Jennifer told reporters, "I was pretty much having a ball. From start to finish, nobody wanted to go home, we loved going to work. We finished work, then we would all go to dinner together, then we would come back...crazy." Considering the movie takes place in a commune, she's not exactly ready to join one! "No, it means I can live in a commune where I can go home and shut my bathroom door and pretend to live on a commune," she quipped. OK! NEWS: JUSTIN THEROUX THROWS BIRTHDAY PARTY FOR JENNIFER ANISTON ON CHATEAU MARMONT ROOF! As for nudists themselves on the commune, Jen pointed out some of the skinbaring souls were kicked out "because they were not authentic because they were too well groomed which you don't do if you are a nudist, we learned." To that point, she added, "I am not a nudist!" Her secret to looking so good though does relate to her state of mind and "being happy." Then, she told OK! with a laugh that when it comes to how she feels about experimenting with free love, "I don't feel about it." Wanderlust opens in theaters nationwide next Friday. Reporting by Gena Oppenheim