2015 Halloween | Entertainment News, Photos, and Videos

Jessie J just debuted a brand new shaved head on her Instagram account while showing off her spooky Halloween costume!

“@joshmadden costume was sick! 😂 Shaved my head last week (I guess you might notice),” the 27-year-old entertainer wrote on her Instagram account, along with a series of pics.

PHOTOS: Check out the latest pics of Jessie J

“I’m so happy in my life. I hope you are too,” Jessie J added while doing a photo shoot showing off her sleek looks and shaved head. See all the photos below!

FYI: Jessie is wearing a Levi’s trucker jacket with the white jeans.

Neil Patrick Harris stops to pose while spending Halloween out and about on Saturday (October 31) in New York City.

The 42-year-old Best Time Ever host dressed as Obi-Wan Kenobi from Star Wars – and he’s barely recognizable!

PHOTOS: Check out the latest pics of Neil Patrick Harris

Earlier that day, Neil and his husband David Burtka showed off their annual Halloween family photo!

David was Han Solo and their twins Gideon and Harper were Luke Skywalker and Princess Leia, respectively.

10+ pictures inside of Neil Patrick Harris going undercover on Halloween…More Here! »

Beyonce just gave a sneak peek of her adorable daughter Blue Ivy Carter, 3, in her Halloween costume in this brand new pic posted on Instagram!

The 34-year-old superstar and her husband Jay Z dressed up as characters from Coming to America. Jay Z was Prince Akeem Joffer, Eddie Murphy‘s character from the 1988 movie. Bey dressed as Queen Aoleon. Blue Ivy was dressed as one of the potential brides!

Also pictured below: Beyonce and Jay Z in costume on Halloween night leaving a party in New York City. 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.

Kim Kardashian shows off her controversial 2013 Met Gala gown for Halloween in this new Instagram photo!

The 34-year-reality star captioned the pic, “Still fits…I think I nailed the Kim K costume!”

PHOTOS: Check out the latest pics of Kim Kardashian

Tons of other stars showed off their clever costumes, including Katy Perry, who dressed up as a “mic drop.” Seriously!

Check out more fun Halloween looks from Shawn Mendes, James Bay, Avril Lavigne, Miranda Lambert, and more below!

10+ pictures inside of Kim Kardashian, Katy Perry, and more showing off their 2015 Halloween costumes…More Here! »

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!