Irina Shayk shows off the latest line of Beach Bunny swimwear.

Irina Shayk shows off the latest line of Beach Bunny swimwear.

Irina Shayk, spotted earlier this week frolicking in the surf with boyfriend and soccer star Cristiano Ronaldo, knows a thing or two about how to fill out a bikini. She sizzles in a new campaign for Beach Bunny.

Shayk, 27, is probably best known in the United States as the 2011 Sports Illustrated Swimsuit Issue cover model, her fifth appearance in the magazine.

Although she’s a willowy five-feet, 10-inches tall, most of her runway work has been confined to swimwear and lingerie. She’s also appeared in the Victoria’s Secret Fashion Show and the brand’s catalogs.

She jumped from swimwear to high fashion with a spread in Spain’s Harper’s Bazaar and covered Elle Spain for their November 2010 issue. She’s appeared in a slew of other magazines and has rep numerous brands.

Overseas, however, she’s known as soccer superstar Ronaldo’s girlfriend going on three years. It’s the longest he’s ever dated anyone. Not surprisingly, they met while on a joint photo shoot for Armani Exchange.

She’s been modeling for Beach Bunny, since 2009.

Check out her new photos and follow TheImproper on Twitter for the latest fashion updates.

Irina Shayk Sizzles in Beach Bunny Swimwear (Click photos to enlarge)