Kate Upton & Irina Shayk: 'SI Swimsuit' On Location Party!

Kate Upton and Irina Shayk strike a pose together at the Sports Illustrated Swimsuit On Location party held at the Aria Resort and Casino CityCenter on Wednesday (February 15) in Las Vegas.

Joining the 19-year-old cover girl were fellow models Anne V, Chrissy Teigen, Crystal Renn, Nina Agdal, and Michelle Vawer.

PHOTOS: Check out the latest pics of Kate Upton

The day before, Kate celebrated her Sports Illustrated Swimsuit Issue cover at its launch party held in New York.

20+ pictures inside of Kate Upton, Irina Shayk, and others at the SI Swimsuit On Location party…