Ashley Tisdale celebrates BFF Austin Butler’s birthday with tribute post, Calls him ‘Twin Forever’

Ashley Tisdale really values BFF Austin Butler.

On August 17, Ashley Tisdale sent a heartfelt message to her BFF Austin Butler in honour of his 32nd birthday.

"Happy birthday buddy @austinbutler!!!" the actress, 38, wrote on Instagram on his happy day.

"I love you so much and so excited to celebrate with you. You are always inspiring me and I'm so grateful that I still have you in my life. My twin forever and always thank you for being the best uncle to Juju! Have the best day!!"

Ashley also sent a number of old photos of the friends with the letter. 

The images showed Austin grinning with a birthday treat, the two dressed up for Halloween, them working on their 2009 film Aliens in the Attic and 2011 film Sharpay's Fabulous Adventure, as well as pictures of them hanging out with her husband Christopher French and Jupiter, her 2-year-old daughter.

Fans of Austin and Ashley are not surprised by the birthday tribute because they have shared many life milestones, including his Oscar nomination for his part in Elvis.

"He is literally one of my best friends and such a good guy," she said on an episode of Chicks in the Office while discussing his performance. "I couldn't be happier for someone."