The Disney Channel series ended back in 2008 but its actors still seem to be close to each other.
Tisdale, 29, posted the photo of herself with twins Dylan and Cole, 22, reported E! Online.
"I love seeing these boys. My little brothers have grown into such smart, talented, and genuinely great people." Tisdale captioned the photo on Instagram.
The twins graduated from New York University's Gallatin School of Individualized Study with honours just last month.