We always love when old cast mates join together years later. 

And the latest is High School Musical's Corbin Bleu and Lucas Grabeel (a.k.a. Chad and Ryan).

 

A post shared by Lucas Grabeel (@mrgrabeel) on

The pair were back together for Corbin's birthday today and of course, made the reunion Instagram-official.

Taking to the social media site, Lucas shared a group pic and captioned it: "For @corbinbleu's birthday we decided to save the world… with 7.40 to spare."

 

For @corbinbleu's birthday we decided to save the world… with 7:40 to spare. #escapetheroom

A post shared by Lucas Grabeel (@mrgrabeel) on

The gang enjoyed a day out in LA's Room Escape, where people have 60 minutes to find their way out of a locked room by completing brain teasers, much like The Adventure Rooms over our side of the pond.

One thing is getting us down though; we have aged a hella lot since High School Musical first aired but LOOK at these two lads… faces as fresh as daisies.