Cosby first made headlines back in 2009 during Beyoncé’s I Am… tour when he declared himself her husband during a live show. As she prepared to perform “Say My Name,” she asked for his name. He responded, “Anthony Cosby Hyphen Knowles.” After she asked if he was her cousin, he replied, “I’m your husband!”

Here are the seven best moments of Beyoncé's Cowboy Carter Tour on July 4 in Washington, D.C.

Beyoncé performed her first Washington "Cowboy Carter" concert on July Fourth at Northwest Stadium. The concert, which included patriotic themes, was the first of two shows at the stadium, with the second scheduled for July 7. Her album "Cowboy Carter" made history as her first country album and earned her a Grammy for best country album.