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Kristen Stewart, Nikki Reed

Eric Charbonneau/WireImage

Robert Pattinson and Kristen Stewart got their party on last night at the Breaking Dawn Part 2 premiere.

The on-again couple was among the last to arrive to the afterparty at L.A. Live at about 11:15 p.m., having changed from their black carpet fashions into their signature casual wear.

R.Pattz wore a black baseball cap, leather jacket, red shirt and jeans. K.Stew opted for a white T-shirt, black leather jacket and jeans.

They were quickly led from a side entrance into one of the two heavily guarded VIP areas at the bash. Once inside, they chatted with costars like Nikki Reed and Taylor Lautner as well as their director, Bill Condon.

Robsten took off at about midnight to head to a private plane taking them to Europe for the movie's London premiere.

The massive party, produced by Chad Hudson Events, included props and costumes from the franchise, including Bella's wedding dress and pickup truck, Edward's wedding tux, Jacob's motorcycle and more.

Robert Pattinson

Jeff Vespa/WireImage

One area recreated Bella and Edward's wedding with wood benches and an arch full of flowers and greenery. Another section was their honeymoon with a waterfall and sand.

And there was even a real pack of three wolves greeting guests at the entrance of the party—in a cage, of course.