Kristen Stewart Honors Garrett Hedlund and More!

After joining Twilight flame Robert Pattinson at Sunday night's MTV Movie Awards, Kristen Stewart crossed the pond to spend time with her other leading man—Garrett Hedlund. "I can verify that he's definitely the man," the actress (in a Balmain mini dress) said when she presented her On The Road co-star with the Man of the Year award in London. Click through to see Demi Moore, Jennifer Lopez, Taylor Swift, and more stars at last night's hottest parties!