Anna Kournikova is to sue Penthouse magazine after it published what it claims are nude photos of the racket-wielding Russian babe . The magazine has printed a 10-page spread of a woman who looks like Kournikova sunbathing in the altogether. She, though, claims that the snaps are not of her. 'People who know Anna and see the photos will immediately recognize these are not photos of her,' said Kournikova's spokesman, David Schwab. 'Penthouse has left us no alternative but to pursue legal action and protect our client's rights and interests. The photos are so dissimilar to Miss Kournikova that the magazine acted either intentionally or with reckless disregard for the truth in order to exploit our client and make a profit.' Penthouse claims that the snapper caught Kournikova on Miami's South Beach. Penthouse's lawyer said, 'The magazine is confident that this is, indeed, Miss Kournikova.'