Britney Spears out with her brother Bryan, Las Vegas, Nevada - 10.09.07

The Toxic singer's older sibling is set to marry Graciella Sanchez in New Orleans, Louisiana on Wednesday, according to U.S. website X17online.

The entire Spears clan, including pop star Britney, is expected to attend the ceremony.

Sanchez is the manager of Bryan and Britney's 17-year-old sister Jamie Lynn.

Source: WENN