Chrissy Teigen was joined by fellow models Nina Agdal, Alyssa Miller, and Kate Bock as she hit the pool at the Encore Beach Club in Las Vegas today. The girls got together to celebrate Sports Illustrated's Summer of Swim event in Sin City, and Chrissy made sure to share photos and a video of the fun on Instagram. Not only do the ladies have their bikini-clad magazine spreads in common, but three of them also have hot celebrity boyfriends to chat about. Nina Agdal showed skin while in Cabo with her new beau, Adam Levine, last week, and Alyssa has recently been linked to Jake Gyllenhaal. Chrissy made headlines when she got engaged to singer John Legend in December 2011, and while Kate Bock is currently single, her 2013 Rookie of the Year status will likely help change that soon.