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High School Musical, 10-Year Reunion

Disney Channel/Image Group L.A.

The gang is still all in this together!

High School Musical stars Vanessa Hudgens, 27, Ashley Tisdale, 30, Lucas Grabeel, 31, Corbin Bleu, 26, and Monique Coleman, 35, recently reunited in a Los Angeles high school gym to celebrate the Disney Channel movie's 10-year anniversary, the Walt Disney Company announced on Sunday.

Notably missing at the event was Zac Efron, 28, who played main character Troy, the love interest of Hudgens' Gabriella.

The group had reunited to tape segments that will air during a special telecast of High School Musical on Jan. 20 at 8 p.m. on the Disney Channel. Efron will also appear, in a separate pre-taped message.

High School Musical premiered on the Disney Channel on Jan. 20, 2006 and spurred two sequels, High School Musical 2 and High School Musical 3: Senior Year. Members of the cast of the cult teen film series have reunited several times in the past few years.

Grabeel and Coleman posted on their Instagram pages photos, including group selfies, from the recent reunion.

A photo posted by Lucas Grabeel (@mrgrabeel) on

Wearing our #HSM class rings to celebrate the 10th anniversary. @corbinbleu.

A photo posted by Lucas Grabeel (@mrgrabeel) on

What a crazy morning! Hanging after 10 years with @corbinbleu @ashleytisdale @_moniquecoleman and @VanessaHudgens.

A photo posted by Lucas Grabeel (@mrgrabeel) on

"#Wildcats in the house!" the actor wrote. "So much #Love. @_moniquecoleman @corbinbleu @ashleytisdale @VanessaHudgens #10years."

"Spent the morning with these babes reminiscing about the movie that changed all of our lives! #HSM10," Coleman said.