Pandemonium Outside Paul McCartney's Wedding

ET's Katie Nicholl immersed herself into the frenzied crush of fans that mobbed the steps of the Westminster Register Office on Sunday. The crowd's diligence paid off when they caught a glimpse of Sir Paul McCartney and Nancy Shevell on their way to exchange vows, and we have it all on camera!

Paul and Nancy wed in an intimate ceremony of only about 30 guests. Among the select few in attendance were all of Paul's children, Nancy's son, Barbara Walters and Ringo Starr, who also wed at the Westminster Register Office.

Watch the video to hear fan reactions to Paul and Nancy's rockstar entrance.