Emily Ratajkowski, Irina Shayk, Chrissy Teigen & Lily Aldridge's Best Moments: SI Swimsuit 2015Author:SI StaffPublish date:Jun 30, 2015Yu Tsai/SIEmily Ratajkowski was photographed by Yu Tsai in Kauai. Yu Tsai/SIIrina Shayk was photographed by Yu Tsai in Kauai. Yu Tsai/SIChrissy Teigen was photographed by Yu Tsai in California. Yu Tsai/SILily Aldridge was photographed by Yu Tsai in Washington. Yu Tsai/SIEmily Ratajkowski was photographed by Yu Tsai in Kauai. Yu Tsai/SIIrina Shayk was photographed by Yu Tsai in Kauai. Yu Tsai/SIChrissy Teigen was photographed by Yu Tsai in California. Yu Tsai/SILily Aldridge was photographed by Yu Tsai in Washington. Yu Tsai/SIEmily Ratajkowski was photographed by Yu Tsai in Kauai. Yu Tsai/SIIrina Shayk was photographed by Yu Tsai in Kauai. Yu Tsai/SIChrissy Teigen was photographed by Yu Tsai in California. Yu Tsai/SILily Aldridge was photographed by Yu Tsai in Washington. Yu Tsai/SIEmily Ratajkowski was photographed by Yu Tsai in Kauai. Yu Tsai/SIIrina Shayk was photographed by Yu Tsai in Kauai. Yu Tsai/SIChrissy Teigen was photographed by Yu Tsai in California. Yu Tsai/SILily Aldridge was photographed by Yu Tsai in Washington. Yu Tsai/SIEmily Ratajkowski was photographed by Yu Tsai in Kauai. Yu Tsai/SIIrina Shayk was photographed by Yu Tsai in Kauai. Yu Tsai/SIChrissy Teigen was photographed by Yu Tsai in California. Yu Tsai/SILily Aldridge was photographed by Yu Tsai in Washington.