2015 Just Jared Halloween Party Latest News, Photos, and Videos

Kelli Berglund Rocks Out to Guitar Hero at Just Jared's Halloween Party!

Kelli Berglund Rocks Out to Guitar Hero at Just Jared's Halloween Party!

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.

kelli berglund just jared halloween party 01
kelli berglund just jared halloween party 02
kelli berglund just jared halloween party 03
kelli berglund just jared halloween party 04
kelli berglund just jared halloween party 05

Kat Graham's 'Monsters Inc.' Costume Is So Good!

Kat Graham's 'Monsters Inc.' Costume Is So Good!

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!

kat graham is incognito just jared halloween party 01
kat graham is incognito just jared halloween party 02
kat graham is incognito just jared halloween party 03
kat graham is incognito just jared halloween party 04
kat graham is incognito just jared halloween party 05

Ariel Winter & Boyfriend Laurent Claude Gaudette Couple Up at Just Jared's Halloween Party

Ariel Winter & Boyfriend Laurent Claude Gaudette Couple Up at Just Jared's Halloween Party

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 HologramsAurora 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.

sarah hyland just jared halloween party 01
sarah hyland just jared halloween party 02
sarah hyland just jared halloween party 03
sarah hyland just jared halloween party 04
sarah hyland just jared halloween party 05

Victoria Justice Dresses as Amy Winehouse at Just Jared's Halloween Party!

Victoria Justice Dresses as Amy Winehouse at Just Jared's Halloween Party!

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 ShamelessCameron 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.

cameron monaghan frankie grande just jared halloween party 01
cameron monaghan frankie grande just jared halloween party 02
cameron monaghan frankie grande just jared halloween party 03
cameron monaghan frankie grande just jared halloween party 04
cameron monaghan frankie grande just jared halloween party 05

Joe Jonas Emulates Will Ferrell at Just Jared's Halloween Party!

Joe Jonas Emulates Will Ferrell at Just Jared's Halloween Party!

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!

joe jonas wilmer valderrama just jared halloween party 01
joe jonas wilmer valderrama just jared halloween party 02
joe jonas wilmer valderrama just jared halloween party 03
joe jonas wilmer valderrama just jared halloween party 04
joe jonas wilmer valderrama just jared halloween party 05