Hanks wasn't the only celebrity performance at the star-studded celebration. Bieber got in front of the camera to sing "All You Need is Love," Love Actually style, with people popping up from the audience while playing instruments, at the end of the ceremony (see above).
Here are a few more snaps from Braun and Cohen's big day:
This was one wedding we would've loved to attend. Congrats to the happy couple!