You've heard of creative weddings, where the entire procession breaks out into song and dance. (You may have even seen this on "The Office"!) But this wedding speech takes the cake. In it, a bride's best friend is giving a sweet toast, where he mentions their shared love of Britney Spears. Then the wedding party breaks out into choreography to Britney Spears' song, "Work B**ch!" — and it's incredible. Watch for yourself above!