Madonna's Opening Night

5/22/2006 2:37 PM PDT

Madonna's Opening Night

Madonna's 'Confessions' tour began Sunday night as the pop star played for nearly 20,000 screaming fans at The Forum in Los Angeles.

The tour is in promotion of Madonna's hit CD, 'Confessions on a Dance Floor.'

Fans traveled from around the world for the opening-night show. "We traveled 28 hours without any sleep to get here," explained Liam, a fan who came from Manchester, England.

At Sunday's performance, picketers from The Forum's stage union demonstrated before the concert as part of a standoff with the stadium's management.

Madonna's tour continues throughout the summer, ending at Amsterdam Arena on Sept. 4.