Last week we introduced you to the hottest rookie in the 2011 Sports Illustrated Swimsuit Issue: 18-year-old bombshell Kate Upton. After noticing quite a few of her delightfully provocative Twitpics from a party in Las Vegas, we started following her on Twitter. We think you'll want to check her out too. Without further ado, here's our 11 favorite candid pics from her @kateupton Twitter page.