Eva Mendes must be boiling. Why else would she be seeking shelter under a big slab of wood in only denim hot pants? Because she has been paid too!! Fear not, lovely Eva isn’t melting; it’s actually baby oil liberally applied so she can slip and slide all over the beautiful Jamie Dornan for Calvin Klein’s Spring/Summer 2010 collection. And Keira Knightley’s ex Dornan doesn’t seem to mind one bit, in fact he’s helpfully holding the wood steady so the poor love’s nipp’s don’t fry. Aah, bless his heart…