Posted on Sun Jul 3rd, 2011 11:42am PDT
Ashley Tisdale partied with her High School Musical co-star Zac Efron Saturday in Malibu, celebrating her 26th birthday (she's only a year older than Lindsay!).
Body language experts might say that these two looked like a little more than friends as Ash had her legs wrapped around her BFF Vanessa Hudgen's ex-boyfriend's neck. Hmm ... wonder what 'Nessa thinks about these pix!
Oh, and check out Ashley's birthday dance below ...
SEE THE GALLERY Ashley Tisdale Celebrates B'day With Zac Efron
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