The Italian fashion brand has released its latest underwear and jeans campaigns starring the world’s number one tennis player.

Nadal — photographed by Steven Klein — is the third athlete to front the campaign, following in the footsteps of David Beckham and Cristiano Ronaldo.

The tennis player’s female counterpart for the brand’s underwear campaign is singer Rihanna who will replace actress Megan Fox. Her ads are yet to be released.

Lady Gaga, 25 years old, recently dethroned Oprah off the top of Forbes magazine‘s Most Powerful Celebrities list and now the pop star, with $90 million, has booted Beyoncé off the top spot on the annual Best-Paid Celebrities-Under-30 list.

In second, teen heartthrob singer Justin Bieber debuted on the strike-it-rich-quick list: the 17-year-old raked in $53 million.

Miami Heat basketball star LeBron James, 26, came in third with $48 million, though his team lost the NBA Finals on June 12 to the Dallas Mavericks.

The new video ad for Emporio Armani Underwear and Armani Jeans featuring Tennis star Rafael Nadal has made its way out in full.

The 50-second clip sees Nadal player going shirtless, wearing only Armani’s jeans and briefs. He leans on the wall and a piece of wood, and lies on the wet floor.

The video is made for the clothing line’s Spring/Summer 2011 advertising campaign.

Tennis star Rafael Nadal’s sexy new Emporio Armani underwear and Emporio Armani jeans ads have arrived.

Nadal replaced soccer star Cristiano Ronaldo, who starred in the previous Emporio Armani underwear campaign.

Megan Fox, who is also the face of Giorgio Armani Cosmetics, is reprising her role in the sultry black-and-white images shot by Mert Alas and Marcus Piggott.

Kicking off the 2011 ATP World Tour, Roger Federer and Rafael Nadal played the most unique round of tennis ever , in the waters outside of Doha, Qatar.

The tennis stars faced off on a floating court in Doha Bay Sunday, just ahead of the first tournament of the year, the Qatar Open.

The two players were said to have not displayed their regular smashing power as the court was wet. Federer and Nadal only volleyed the tennis ball during the match.

From Rafael Nadal to Julianne Moore, here are five of the most anticipated fashion ad campaigns for 2011.