"Yeah, well it's top secret so we're not supposed to talk about [that]," Zac told Access Hollywood's Nancy O'Dell and Billy Bush just moments ago on the award show's red carpet. "I don't know how it got out… We are doing a little something. We can't talk too much about it, but it's going to be a pretty fun show tonight."
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Out of respect for the Oscar producers, Zac kept many of the details of his upcoming Efron-Jackman collaboration under wraps, but he revealed a little about the costuming – it will includes shirts.
"Mine's gonna be on," Zac told Billy. "I don't know about you."
When asked by Nancy which gent the ladies will love more during tonight's telecast, Vanessa Hudgens, despite being Zac's paramour, remained neutral.
"I don't know. It depends if you like them old or young. Not old. He's not old," she laughed, referring to Hugh. "Older."