2015 Just Jared Halloween Party | Entertainment News, Photos, and Videos

JustJared.com‘s Jared Eng is unrecognizable in his demon nun costume while posing with Miles Teller and Keleigh Sperry at the 2015 Just Jared Halloween Party: “JJ Psych Ward” on Saturday (October 31) at No Vacancy in Hollywood.

Other celebs joining us at the party that night included Joe Jonas, Wilmer Valderrama, Nicola Peltz, Dylan Penn, Kat Graham, Modern Family stars Sarah Hyland and Ariel Winter, Pretty Little Liars actresses Shay Mitchell, Ashley Benson, and Janel Parrish, Chord Overstreet, cute couple Zoey Deutch and Avan Jogia, AnnaLynne McCord, Margaret Qualley, Will Peltz and girlfriend Kenya Kinski-Jones, Ross Lynch with girlfriend Courtney Eaton and his R5 bandmates, Sabrina Carpenter, Sofia Carson, Kelli Berglund, Stefanie Scott, Frankie Grande, and so many more.

Glee‘s Mark Salling even dressed up as the host himself, dying his hair blond and recreating one of Jared‘s favorite jackets by bedazzling his own. Our favorite costume of the night!

Be sure to check out all of the photos in our complete coverage of the Halloween Party: [Party 1] [Party 2] [Party 3] [Party 4] [Party 5] [Party 6] [Party 7] [Party 8] [Party 9] [Party 10] [Party 11]

Thanks for all the love from our sponsors – Guitar Hero for setting up multiple stations for our guests to rock out with the game all night long; Hasbro for providing an amazing pumpkin decorating room where partygoers used the DohVinci stylers to create awesome designs and for setting up the Nerf Zombie Strike station in our outdoor maze; Kraken Rum for helping us create the “Electrishock Mojito,” Jose Cuervo for providing the tequila for a “Manic Margarita,” and Freixenet for giving guests a delicious Spanish Cava to sip on; AQUAhydrate for keeping guests hydrated with water all night long; and Sprinkles Cupcakes for baking delicious mini cupcakes that fit to the theme with the pill-shaped design on top!

Another big thank you to our DJ Dominic Carter for spinning tunes that had guests dancing throughout the party and our three actors – Justin Valis, Jola Cora, and John-Jonne Smith – for getting into character as psych ward patients and scaring all the guests.

60+ pictures inside of celebs attending the 2015 Just Jared Halloween Party… More Here! »

Dylan Penn rocks a super chic grunge outfit while making her entrance on the carpet at the 2015 Just Jared Halloween Party held at No Vacancy on Saturday (October 31) in Hollywood.

Also in attendance were former Revenge co-stars Ashley Madekwe and Christa B. Allen, who were dressed as Meryl Streep‘s Death Becomes Her character and a disco ball, respectively.

Other celebs in attendance included Katherine Schwarzenegger, model Josephine Skriver and boyfriend Alexander DeLeon as skeletons, fashion guru Aimee Song as an avocado, Ahna O’Reilly as a synchronized swimmer, and Joe Zee as a vampire.

Guests at the event sipped on delicious specialty cocktails, such as the Electricshock Mojito featuring Kraken Rum.

Holland Roden and Max Carver win the award for most outrageous and most creative costumes of the night at the 2015 Just Jared Halloween Party held at No Vacancy on Saturday (October 31) in Hollywood.

The cute couple dressed up as the Rick Owens Spring 2016 collection. When the designs were shown off on the red carpet earlier this year, the models walked the runway holding each other upside down!

Other celebs in attendance at the event included some other MTV stars like Teen Wolf‘s Cody Saintgnue, Scream‘s Carlson Young, and Faking It‘s Katie Stevens.

Disney Channel star Kelli Berglund was seen having a blast while checking out the Guitar Hero Live room, where she rocked out to some of the fun tunes in the game.

Kat Graham takes the giant suit off herself to snap a photo at the 2015 Just Jared Halloween Party held at No Vacancy on Saturday (October 31) in Hollywood.

The 26-year-old The Vampire Diaries actress was dressed up as the lovable green guy Mike Wazowski from the Disney/Pixar movie Monsters, Inc.

Other stars in attendance at the event that night included AnnaLynne McCord, who shared a cute video on her Instagram account that day. Watch the clip below!

Brittny Gastineau, former Pussycat Dolls singers Jessica Sutta and Melody Thornton, Hayley Hasselhoff, and Susie Abromeit all made an appearance as well.

Guests at the event sipped on Spanish Cava from personal sized bottles provided by Freixenet!

Cameron Monaghan shows off his ripped body while going shirtless for his Mad Max: Fury Road war boy costume at the 2015 Just Jared Halloween Party on Saturday (October 31) at No Vacancy in Hollywood.

Also in attendance and showing off some skin was Frankie Grande, who dressed as David Bowie‘s Goblin King character from Labyrinth.

Cameron was seen hanging out with his pal Katherine McNamara, who dressed as Kim Possible and spent time with another Cameron as well, her former Happyland co-star Cameron Moulene. The pair paid a visit to Hasbro’s Dohvinci pumpkin decorating room where they took a shot at creating some 3D art!

Other celebs in attendance at the party included Victoria Justice as Amy Winehouse, Kaitlyn Dever and her sister Mady as the Wayne’s World guys, Zoey Deutch as Cindy Lou Who from The Grinch, Avan Jogia as Blackadder, and Ciara Bravo.

Mark Salling poses for a photo with JJ‘s editor in chief Jared Eng while attending the 2015 Just Jared Halloween Party on Saturday (October 31) at No Vacancy in Hollywood.

The 33-year-old former Glee actor actually dressed up as Jared and replicated one of his favorite Saint Laurent jackets by bedazzling one himself! One of Mark‘s friends even dressed up as our resident photographer Justin Campbell.

Mark was seen having fun with the Nerf Zombie Strike toy at the party. All of the guests who entered the venue got the chance to shoot the zombie target in the maze outside as well!

Other guests at the party included Chord Overstreet, Drew Van Acker, Grey Damon, Giles Matthey, Edi Gathegi, Chris Galya, Josh Henderson, Jayson Blair, Luke Grimes, Tony Revolori, and social media star Logan Paul.

Joe Jonas and Wilmer Valderrama pose for a photo while hanging out inside the 2015 Just Jared Halloween Party on Saturday (October 31) at No Vacancy in Hollywood.

The guys spent most of the night with each other and they were later joined by pal Derek Hough.

Joe dressed up as Will Ferrell‘s character Chazz Michael Michaels from the movie Blades of Glory while Wilmer just dressed as himself. Derek wore a skeleton costume.

Other guys in attendance at the part included Jake Miller as an Olympian, Brant Daugherty as Clark Kent, Sinqua Wills as Fetty Wap, Ryan Beatty as a greaser, and Travis Tope as a dog, as well as actor Stephen Lunsford and singer Matt Carrie.

There was a Guitar Hero Live room inside the party where guests were able to battle it out to some of the hottest songs out there. See a photo of JJ‘s Jared Eng in one of the booths below!