Vanessa Hudgens in RentZac Efron rushed from the wholesome Teen Choice Awards to watch girlfriend Vanessa Hudgens' last performance in 'Rent' at The Hollywood Bowl on Sunday.

But he sure had a different way of showing his loving support.

In the middle of the stage production, Efron got so into Hudgen's sexy striptease, he got up from his seat to "tip" her $20 during her 'Out Tonight' number.

Hudgens, starring as HIV-infected dancer Mimi, grabbed the cash and quickly stuffed it in her to bra.

Watch the video, after the jump. >>