Kate Upton: 'SI' Swimsuit Launch Party!

Kate Upton keeps it classy while attending the 2013 Sports Illustrated Swimsuit launch party at Crimson on Tuesday (February 12) in New York City.

Earlier in the day, the 20-year-old supermodel was all dolled up while making an appearance on the Today Show in the Big Apple.

PHOTOS: Check out the latest pics of Kate Upton

The day before, Kate rocked a black dress while making an appearance on the Late Show with David Letterman with Chrissy Teigen.

FYI: Kate is wearing a Lanvin dress, Valentino heels, and Chopard jewels at the launch party.

25+ pictures inside of Kate Upton attending the Sports Illustrated Swimsuit Launch Party…