This is not your mama's adult contemporary singer!
With his newly shorn hair and tatted up muscles, John Mayer looks like he's more likely to rock at Ozzfest than serenade college chicks at Lilith Fair.
Jen Aniston does the body good.
John Mayer Is a Hard Bodied Soft Rocker
8/1/2008 1:20 PM PDT BY TMZ STAFF
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