Jessica Simpson has confirmed she will act as maid of honour at her sister Ashlee’s upcoming wedding.

The singer and actress’ younger sibling is marrying Fall Out Boy rocker Pete Wentz, and Jessica intends on being heavily involved in proceedings - despite Ashlee recently commenting Jessica’s music would be banned from the reception.

When asked if she would be the maid of honour after performing for 35,000 members of the Marine Corps at Camp Pendleton on Thursday night, Jessica replied, "Of course!"