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What time is it? Vanessa Hudgens' birthday time!

As the actress celebrates turning 27, her High School Musical co-stars clearly have their head in the game and are sharing the sweetest messages on social media.

BFF Ashley Tisdale kicked things off early in the morning with a collage of past and present photos of the twosome posing on various red carpets over the years.

"It's my baby V's birthday!!! Wow we have been thru so much together. You have grown into such an amazing woman," she shared on Instagram. "We've toured the world together, have had many hair changes, and been part of a phenomenon. I honestly couldn't have done it without you."

Ashley Tisdale, Vanessa Hudgens, Young Hollywood Awards

Alberto E. Rodriguez/Getty Images for Variety

She continued, "You are my spirit animal and continuously challenge me in all the ways a best friend should. I love living life with you... And also working out with you cuz ur body is HOT!"

The love fest didn't stop there!

Vanessa's former co-star KayCee Stroh, better known as Martha Cox from the Disney Channel franchise, shared her own throwback photo.

"Happy Birthday to this beautiful lil' lady!" she wrote online. "Send @VanessaHudgens some Birthday Love. Miss ya V #HSM #BirthdayGirl."

As for Vanessa, she is feeling the love from family, friends and strangers alike as she turns another year older.

"Wooow. Today I'm 27. Seems so weird, because I still feel 18," the future Grease: Live actress confessed on Instagram. "New responsibilities come yet I still feel like a kid at heart. I think I always will and that's the way to be...stay young forever. Thank you for all the birthday wishes!"