Missing the reunion, Zac (who played the leading role of Troy Bolton) didn't appear alongside his former co-stars Vanessa Hudgens, Ashely Tisdale, Lucas Grabeel and Corbin Bleu.
The gang had been filming to record special segments set to air on Disney Channel later this month as a tribute to High School Musical.
Taking to Instagram yesterday (17 January), Monique (who played Taylor McKessie - Gabriella Montez's best friend) shared a photo of herself, Vanessa, Ashely, Lucas and Corbin altogether.
The group took a break from the cameras to cosy up for a selfie and alongside her post, Monique gushed: "Spent the morning with these babes reminiscing about the movie that changed all of our lives! #HSM10."
While Zac wasn't present for filming, E! has confirmed he will still appear in the special, as he has pre-recorded his own message individually.
Zac became a household name thanks to the much-loved High School Musical films. The first graced our screens back in 2006, premiering on the Disney Channel, with a sequel arriving a year later.
High School Musical 3: Senior Year was the third and final film and was released across cinemas in 2008.
10 years on and we're still wishing we were a Wildcat, you?
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