SI swimsuit models Anne V and Alyssa Miller attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

SI swimsuit models Jessica Gomes and Michelle Vawer attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

SI swimsuit models Nina Agdal, Michelle Vawer and Anne V attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

SI swimsuit models Crystal Renn and Ariel Meredith attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

SI swimsuit models Adaora and Kirby Griffin attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

SI bodypaint model, soccer player Alex Morgan (L) attends SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

(L-R) Sports Illustrated Swimsuit Issue cover model Kate Upton, Associate Editor at Sports Illustrated, Darcie Baum, Senior Editor at Sports Illustrated, MJ Day and SI swimsuit models Nina Agdal, Jessica Gomes and Michelle Vawer attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

Sports Illustrated Swimsuit Issue cover model Kate Upton and SI swimsuit model Irina Shay attend SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Michael Loccisano/Getty Images for Sports Illustrated)

Sports Illustrated Swimsuit Issue cover model Kate Upton arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Alyssa Miller arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Genevieve Morton arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Jessica Gomes arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Michelle Vawe arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Crystal Renn arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Nina Agdal arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Cintia Dicker arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Kirby Griffin arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Jessica Perez arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)

SI swimsuit model Ariel Meredith arrives at SI Swimsuit On Location hosted by Haze Nightclub at the Aria Resort & Casino at CityCenter on February 15, 2012 in Las Vegas, Nevada. (Photo by Jacob Andrzejczak/Getty Images for Sports Illustrated)