PHOTOS: Ronaldo bares it all in latest CR7 underwear ads

Real Madrid's football sensation Cristiano Ronaldo's underwear brand continues to grow.

The Portuguese midfielder launched the second collection of his CR7 men's underwear.

"I am very proud to finally launch my new Rankin X Ronaldo for #CR7Underwear campaign! The second collection launches today- hope you love it as much as I do!," he wrote on his Facebook page.

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Ronaldo launched the CR7 underwear range in 2013 in partnership with New York fashion designer Richard Chai and JBS Textile Group.

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The footballer had first opened a fashion boutique under the name CR7, which denotes his initials and jersey number in Madeira, in 2006. Two years later opened his second branch in Lisbon.

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He has also launched a range of premium shirts and shoes through his CR7 brand and plans to expand it in the years to come.

Ronaldo is currently touring the United States with the Real Madrid team. They played Manchester United on Saturday and were beaten 1-3.

The match was witnessed by 109,318 fans -- a record for largest crowd to watch a football match in the US.