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Justin Bieber caused a fan frenzy at the launch of his Someday fragrance at Macy’s Herald Square in New York yesterday. “Wild Day,” the Beebs tweeted after a brief scuffle erupted outside the department store during a meet-and-greet with the crowd. Not to worry, all is well with the teen heatthrob, who made it safely inside (and not a hair out of place!) to pose with a bottle of his sweet scent. Click through the gallery to see Anne Hathaway, Kanye West, Lady Gaga and more stars at last night’s hottest parties!