SI Swimsuit models at fashion week

Irina Shayk attends the Peter Lindbergh exhibition at Vladimir Restoin Roitfeld Gallery. (Photo by Mireya Acierto/Getty Images)

Kate Upton and Christie Brinkley attend the 2013 Style Awards at Lincoln Center. (Photo by Jim Spellman/WireImage)

Molly Sims attends the Helmut Lang show during Spring 2014 Mercedes-Benz Fashion Week at 545 West 22nd Street. (Photo by Jamie McCarthy/WireImage)

Jessica White attends an event for 2014 Mercedes-Benz Fashion Week. (Photo by Gilbert Carrasquillo/FilmMagic)

Kerry Washington, Nina Garcia, Zac Posen and Heidi Klum attend the Project Runway Spring 2014 fashion show. (Photo by Stephen Lovekin/Getty Images)

Heidi Klum attends the Project Runway show during Spring 2014 Mercedes-Benz Fashion Week at The Theatre at Lincoln Center. (Photo by Thomas Concordia/WireImage)

Jessica White attends the Mercedes-Benz Star Lounge. (Photo by Mike Coppola/Getty Images for Mercedes-Benz)

Molly Sims (L) and actress Ali Larter attend the Samsung Galaxy Blue Room at Lincoln Center. (Photo by Donald Bowers/Getty Images for Samsung)

Heidi Klum attends the Project Runway back stage during Spring 2014 Mercedes-Benz Fashion Week. (Photo by Dimitrios Kambouris/Getty Images)

Lindsay Ellingson, Karolina Kurkova, Peter Lindbergh, Doutzen Kroes, and Irina Shayk attend the Peter Lindbergh exhibition at Vladimir Restoin Roitfeld Gallery. (Photo by Dimitrios Kambouris/Getty Images)

Crystal Renn prepares backstage at the Zac Posen show at Center 548. (Photo by Henry S. Dziekan III/WireImage)

Julie Henderson attends the #DKNY25 Birthday Bash. (Photo by Jamie McCarthy/Getty Images for DKNY)

Chrissy Teigen and Hannah Davis step out during Fashion Week. (Photo by Demis Maryannakis/Star Max/FilmMagic)

Jessica White attends the #DKNY25 Birthday Bash at 23 Wall Street. (Photo by Jim Spellman/WireImage)

Julie Henderson attends the Mark + Estel show. (Photo by Rob Kim/WireImage)

Karlie Kloss (L) and Heidi Klum attend The Daily Front Row's Fashion Media Awards at Harlow. (Photo by D Dipasupil/Getty Images)

Kate Upton attends "Mademoiselle C" New York Premiere at Florence Gould Hall. (Noam Galai/Getty Images)

Alyssa Miller attends the 3.1 Phillip Lim for Target Launch Event at Spring Studio. (Photo by Dimitrios Kambouris/Getty Images)

Sara Sampaio, Emily DiDonato and Elsa Hosk attend Modelinia Fashion Week Dinner at Freemans. (Photo by Dimitrios Kambouris/Getty Images)

l Christine Teigen attends the #DKNY25 Birthday Bash at 23 Wall Street. (Photo by Jim Spellman/WireImage)

Julie Henderson attends the Fashion Palette Australia fashion show at Pier 59. (Photo by Allison Joyce/Getty Images)

Mark Hill styles Molly Sims for fashion week. (Photo by Jeff Schear/Getty Images for Mark Hill)

Meghan Markle (L) and Petra Nemcova attend the Herve Leger By Max Azria fashion show at The Theatre at Lincoln Center. (Photo by Astrid Stawiarz/Getty Images)

Crystal Renn attends #DKNY25 Birthday Bash at 23 Wall Street. (Photo by Gilbert Carrasquillo/FilmMagic)

Petra Nemcova is seen backstage at the Herve Leger by Max Azria show at Lincoln Center for the Performing Arts. (Photo by John Parra/Getty Images)

Christine Teigen and John Legend attend the Lexus Design Disrupted Fashion Event at SIR Stage 37. (Photo by Taylor Hill/Getty Images)

Alyssa Miller and Caroline Winberg attend the 2013 Style Awards at Lincoln Center. (Photo by Jim Spellman/WireImage)

Stacy Keibler and Molly Sims attend the Helmut Lang show. (Photo by Jamie McCarthy/WireImage)

Naomi Campbell walks the runway at the Diane von Furstenberg Spring Summer 2014 fashion show. (Photo by Catwalking/Getty Images)

Designer Donna Karan, Jay Manuel, Jessica White and Rita Ora attend the #DKNY25 Birthday Bash. (Photo by Jamie McCarthy/Getty Images for DKNY)