Many stars have aimed for the "wedding of the century" title, and Taylor Swift and Travis Kelce's marriage will soon stake its claim. The Madison Square Garden event, reportedly set for July 3, is estimated to top $20 million, with security being a unique (and pricey) factor for star-studded occasions. And roughly 1,000 guests are expected (while names like Ed Sheeran and Sabrina Carpenter have been spotted in New York City). Will this all add up to an event that goes down in history?