On Saturday some of the ultimate Disney Channel High School Musical Stars including Ashley Tisdale, Monique Coleman, Vanessa Hudgens and Corbin Bleu reunited to celebrate Halloween.

They got all dolled up in various costumes for the epic occasion. Vanessa Hudgens dressed up as a sexy Alice in Wonderland, Ashley was the Queen of Hearts, Corbin was one sexy Lenny Kravitz and Monique Coleman was Dionne from Clueless.

Unfortunately, Zac Efron and Lucas Grabeel were not there. I’m sure they have a very good reason for not attending.

"I continue to see all the guys from High School," Zac Efron recently shared with E! News. "Every time we do…there's just this look between us. It's so cool because we never forget a single moment of that experience."

On July 24, the cast of "High School Musical" reconcile for the "Descendents" premiere, and posted a group pic on Instagram.

The group snapped a photograph that left the Internet cheering as though they were again watching a Wildcats basketball game.

It has almost been10 years since the cast reunited to honor their mentor and good friend director Kenny Ortega , as he celebrated his new original Disney Channel movie.

The "Descendants" Disney movie is a 2015 American musical fantasy television film directed by Kenny Ortega.

It stars Dove Cameron, Cameron Boyce, Booboo Stewart, Sofia Carson, Mitchell Hope, Melanie Paxson, Brenna D'Amico, Sarah Jeffery, Zachary Gibson, Jedidiah Goodacre, Dianne Doan, Dan Payne, Keegan Connor Tracy, Wendy Raquel Robinson, Maz Jobrani, Kathy Najimy, and Kristin Chenoweth.

The plot follows these teenagers adjusting to life outside the Isle of the Lost, while on a mission to steal the Fairy Godmother's wand and free their parents from captivity.

The film debuted on July 31, 2015 as a Disney Channel Original Movie, to positive reviews and 6.6 million viewers.