Celebrate St. Patrick's Day with SI Swimsuit!

Gigi Hadid :: Ben Watts/SI

James Macari/SI

Lily Aldridge was photographed by James Macari in the Cook Islands. Swimsuit by MAKENA SURF WEAR.

Ben Watts/SI

Hannah Davis was photographed by Ben Watts at the Jersey Shore. Swimsuit by Swimsuit by Elizabeth Southwood for Sauvage Swimwear, Surfboard by Grain Surfboards.

Ben Watts/SI

Kate Bock was photographed by Ben Watts in Tennessee.

Yu Tsai/SI

Emily Ratajkowski was photographed by Yu Tsai in Kauai.

James Macari/SI

Nina Agdal was photographed by James Macari in the Cook Islands. Swimsuit by Beach Riot.

Raphael Mazzucco/SI

Valerie van der Graaf was photographed by Raphael Mazzucco in Brazil. Scarf by Afghan Hands.

Derek Kettela/SI

Jessica Gomes was photographed by Derek Kettela in Madagascar. Swimsuit by Martha Rey for The La Boheme.

Ben Watts/SI

Solveig was photographed by Ben Watts in Tennessee.

James Macari/SI

Chrissy Teigen was photographed by James Macari in the Cook Islands. Swimsuit by Kovey.

Yu Tsai/SI

Emily DiDonato was photographed by Yu Tsai in Kauai.

Yu Tsai/SI

Irina Shayk was photographed by Yu Tsai in Kauai.

Ben Morris/SI

Ariel Meredith was photographed by Ben Morris on U.S. Route 66.

James Macari/SI

Nina Agdal was photographed by James Macari in the Cook Islands. Swimsuit by Ola Vida.

James Macari/SI

Chrissy Teigen was photographed by James Macari in the Cook Islands. Swimsuit by MIKOH.

Yu Tsai/SI

Emily DiDonato was photographed by Yu Tsai in Kauai.