A bacchante by the Italian comic book writer and artist Milo Manara (born 1945). Manara is here quoting traditional academic paintings of the 19th century.
David and Bathsheba (1562) by the Flemish manierist painter Jan Massys (1509-1575). A great example that already in the 16th century nude painting could be highly erotic. Kind of perfect.
Probably a cover illustration by the Brazilian artist José Luiz Benício da Fonseca (born 1936). Benício did a lot of illustrations for novels, cinema and advertising but probably he is best known for his covers for spy novels which look a little James Bond inspired.