Kelli Berglund rocks out to a round of Guitar Hero Live while having a blast at the 2015 Just Jared Halloween Party held at No Vacancy on Saturday (October 31) in Hollywood.
The 19-year-old Lab Rats actress, dressed up as Miss Congeniality, was one of the many celebs who played the game throughout the evening.
Other celebs in attendance included cute couple and Teen Wolf co-stars Holland Roden and Max Carver, who were dressed as the Rick Owens Spring 2016 collection. When the clothes were presented on the runway, the models held each other upside down!
More stars at the event were MTV stars like Teen Wolf‘s Cody Saintgnue, Scream‘s Carlson Young, and Faking It‘s Katie Stevens.
We love the movie Monsters Inc. so much that we are totally obsessed with the costume Kat Graham wore to the 2015 Just Jared Halloween Party on Saturday (October 31) at No Vacancy in Hollywood.
The 26-year-old actress and singer was totally incognito in the Mike Wazowski costume, which she removed for a few photos.
PHOTOS: Check out the latest pics of Kat Graham
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!
Ariel Winter and her boyfriend Laurent Claude Gaudette make a super cute couple while walking the carpet at the 2015 Just Jared Halloween Party on Saturday (October 31) in Hollywood.
The 17-year-old actress wasn’t the only Modern Family star in attendance – Sarah Hyland stopped by alongside her Suicide Squad!
“So turns out my friends are badasses,” Sarah captioned the below photo on Instagram.
Other celebs who stopped by were X-Men: Apocalypse‘s Alexandra Shipp, Jem and the Holograms‘ Aurora Perrineau and Stefanie Scott (not pictured), AJ Michalka and boyfriend Keenan Tracey, Emily Osment, Taylor Spreitler, and Camryn Grimes.
Guests at the event got the chance to rock out during the party and play Guitar Hero Live thanks to the awesome booths set up by Activision.
Victoria Justice wears fake tattoos on her body and her hair in a high up’do while attending the 2015 Just Jared Halloween Party held at No Vacancy on Saturday (October 31) in Hollywood.
Also in attendance and showing off some skin were Shameless‘ Cameron Monaghan as a war boy from Mad Max: Fury Road and 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 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.
Joe Jonas is covered in red, white, and blue while all dressed up for the 2015 Just Jared Halloween Party held at No Vacancy on Saturday (October 31) in Hollywood.
The 26-year-old DNCE singer was dressed up as Chazz Michael Michaels, the character that Will Ferrell plays in Blades of Glory, and he was joined at the event by his pal Wilmer Valderrama, who dressed as himself.
Derek Hough was seen hanging out with the guys and he was dressed as a skeleton.
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!
Olivia Holt and Sabrina Carpenter sandwich in their pal Jordan Fisher while attending the 2015 Just Jared Halloween Party on Saturday (October 31) at No Vacancy in Hollywood.
The actors all wore great outfits for the holiday – Olivia was Edna Mode from The Incredibles, Sabrina was Khaleesi from Game of Thrones, and Jordan was Indiana Jones.
Other stars in attendance included Sammi Hanratty, Cambrie Schroder, and Descendants‘ Sofia Carson, who dressed as Audrey Hepburn.
Sofia was one of the many celebs who picked up one of the Nerf Zombie Strike blasters throughout the evening. All guests walked into the party through a maze and passed by the target range!
If you think you recognize who Mark Salling is dressed up as for Halloween this year, that’s because it is JJJ’s editor-in chief Jared Eng!
The 33-year-old former Glee actor was seen posing for a photo with Jared himself while attending the 2015 Just Jared Halloween Party on Saturday (October 31) in Hollywood. 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.
