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Jamie Chung, Bryan Greenberg

Donald Bowers/Getty Images for Brancott Estate

Guests of Jamie Chung and Bryan Greenberg's wedding are in for a scary good time.

The 32-year-old actress, a Real World alum and The Hangover sequel star who also played Mulan on Once Upon a Time, got engaged in late 2013 to her 37-year-old beau, who played Jake on One Tree Hill and also starred in Friends With Benefits. The couple plans to wed this Halloween and host a fun weekend for their loved ones. 

The two will tie the knot at El Capitan Canyon, a nature lodging resort featuring cabin and tent accommodations, in Santa Barbara, California, E! News has learned. Guests are asked to stay on the premises throughout the weekend.

The festivities will actually begin the day before Halloween, when Chung and Greenberg host a "Boos & Booz Welcome dinner" at the resort. There, guests should show up in, yep, costumes! It is Halloween eve, after all.

The wedding ceremony will take place on Oct. 31, with a dinner and dancing reception to follow. Cocktail attire is required.

The day after their wedding, Chung and Greenberg will host a send-off breakfast, where attire will be casual.

Chung and Greenberg began dating in the spring of 2012 after knowing each other for several years. That April, they stepped out together as a couple at the Coachella Valley Music and Arts Annual Festival in Indio, California. They have filmed three movies together, including It's Already Tomorrow in Hong Kong.

In January 2014, days after their engagement, Chung sported a giant, double shank halo diamond engagement ring.

Weeks later, she checked out Monique Lhuillier's spring 2015 bridal gowns during at New York Fashion Week and also attended the Marchesa spring 2015 bridal collection show, giving her a first look at styles to consider for the big day.

"I want it to be simple and beautiful and not clunky," she told E! News about her future wedding dress. "I'll tell you what I'm not into: huge princess gowns…over-the-top is not really my style."

She also talked to E! News about the couple's hopes for their wedding venue.

"I certainly want it to be outdoors," she said. "Brian and I love being outdoors. We are avid adventurers. I think it will be something rustic chic."

The following April, also told E! News that April that she and Greenberg want a "rustic and colorful" fall wedding and were "leaning toward outdoors," adding, "There are so many great campsites there and venues to get married."

On Aug. 2, Chung, her girlfriends and her mom celebrated the actress' upcoming wedding with a bridal shower in Los Angeles. The party featured a surprise guest: Her fiancé! Greenberg showed up unannounced with a bouquet of red roses for his future wife.