Simone Biles, Aly Raisman flaunt sculpted silhouettes in tiny bikinis

HOUSTON, Jan. 11 (UPI) -- If you couldn't tell when they were wearing leotards, the secret is definitely out now.

United States gymnasts Aly Raisman and Simone Biles are absolutely shredded. The dominating duo recently sported skimpy bikinis for Sports Illustrated's 2017 swimsuit issue.

And the photos are golden.

Biles, 19, won five medals, including four gold, at the Rio Olympics. Raisman, 22, has won six career Olympic medals.

"I am thrilled to include the gold medal-winning, U.S. women's gymnasts Aly Raisman and Simone Biles in this year's Swimsuit issue," SI Swimsuit editor MJ Day said in a release. "Aly and Simone represent all that is beautiful and strong and inspiring in women today. Women that are not only elite athletes, that are captivating and impressive in their own professional accomplishments (lots and lots of Olympic gold medals between them), but strikingly sexy and beautiful in front of photographer James Macari's lens. I love seeing them shine in an entirely different way in the Swimsuit issue and being able to share these gorgeous and powerful images with the world. These women, their beauty, and what they can achieve know no limits."

Sports Illustrated released sneak-peak photos by James Macari Wednesday. The photos were shot at the North Houston Skate Park and the Lillie and Hugh Roy Cullen Sculpture Garden.

The photos are also taken as a backdrop for the first annual VIBES by Sports Illustrated Swimsuit festival. The music, food and culture event showcases "the best of the best from each category at the POST HTX in downtown Houston," according to Sports Illustrated. The launch week festival is set for Friday, Feb. 17 and Feb. 18.

Ronda Rousey, Anastasia Ashley, Amanda Beard, Clair Bidez, Alana Blanchard, Natalie Coughlin, Skylar Diggins, Jennie Finch, Leryn Franco, Kim Glass, Ekaterina Gordeeva, Steffi Graf, Natalie Gulbis, Daniela Hantuchova, Ana Ivanovic, Michelle Jenneke, Maria Kirkilenko, Anna Kournikova, Alex Morgan, Danica Patrick, Bruna Schmitz, Lacy Schnoor, Maria Sharapova, Hannah Teter, Lindsey Vonn, Serena Williams, Venus Williams, and Caroline Wozniacki are among the other athletes to appear in past issues of the magazine.