INDIO (California), April 12 -- "Beliebers" were celebrating the return of pop superstar Justin Bieber on Saturday, ahead of his return to major stages with a headlining appearance on the second day of the Coachella music festival.

The Canadian singer of Sorry will appear at the event in Indio, California as festival season kicks off in the United States.

"This is what I've been looking forward to for months," 28-year-old Alexis Sierra said as she entered the venue just after gates opened.

Held in the scorching California desert, where the beating sun pushed the thermometer to 30degC early Saturday, thousands of the Baby singer's fans - known as Beliebers - took over the festival grounds sporting clothing, hats and banners pa...