10/20/2013 9:50 AM PDT BY TMZ STAFF
39-year-old Kate Moss
isn't holding back before her big Playboy spread in January, removing her bikini top on the beach in Jamaica yesterday -- and she doesn't look half bad.
FYI, Moss will be gracing the cover of Playboy's 60th anniversary issue ... the same month she turns 40.
Jamaican us crazy.