Kim Kardashian posed with her fiancé, Kris Humphries, at a Matthew Williamson fashion show in Monaco today. She looked gorgeous in a white dress for the occasion, but it was Kim Kardashian's huge diamond ring that was the center of attention. Kim's been flaunting her new 20.5-carat accessory since announcing her engagement to Kris with a People cover on Wednesday. She flashed the sparkler at the airport on her way overseas, and it looks like she's already starting to plan her nuptials. Kim tweeted a picture of her two youngest sisters, Kylie and Kendall, and asked, "how adorable are my bridesmaids?" The newly engaged couple haven't shared any other details about their wedding, but Kim's mom, Kris Jenner, did request that they give her a little more time to plan than the nine days that she had to pull Khloe's event off.