Jessica Biel and Justin Timberlake have been shipping 300 of their closest friends to Italy this week in preparation for their nuptials, which probably will happen this weekend. The arrangements for the cloak-and-dagger super-secret wedding have been mostly under wraps, except for the very vague save the date announcements sent out last spring. But as early as Tuesday, stars began arriving in Naples and were treated to a fireworks show Wednesday night. Saturday Night Live star Andy Samberg - Timberlake's costar in their infamous "D*ck in a Box" sketch -- was among the first to arrive, RadarOnline.com reported. "A private plane was flown out of New York to take guests to Italy, including both their publicists. But the event has been shrouded in a lot of secrecy, and not even the guests were told the exact location or day of the wedding before they left,” a source told Radar. The New York Post reported that the happy couple chose Naples for their nuptials because it's a place that “means a lot to both of them.”