It truly is Kate Upton's world these days and there's no better evidence than the way a fun tweet from a night out with the girls has turned into a huge news item. The photo of fellow model Heidy De La Rosa jokingly copping a feel of Kate has been retweeted over 500 times and favorited by 1,600 people (and counting!). It has been written about in The Sun, The New York Post, E! Online and a host of other news outlets. With this in mind, we dove into Kate's Twitter account and collected all of her best Twitpics for this gallery.