Harry Styles gave One Direction fans a thrill at his solo tour opener in San Francisco, California, by performing a rocking version of the boy band's What Makes You Beautiful.

The singer also performed new versions of his band's Stockholm Syndrome and covers of Fleetwood Mac's The Chain and Ariana Grande's Just a Little Bit Of Your Heart, which he co-wrote for the pop star.

The heartthrob played a 14-song set to kick off his first official solo date at San Francisco's Masonic on Tuesday night (19Sep17), kicking off the show with Ever Since New York and ending with his debut single Sign of the Times.

His entrance was delayed when a fire alarm rang out, briefly threatening to shut the gig down, but it proved to be a false alarm.

Harry also showed his love for the LGBT (lesbian, gay, bisexual, and transgender) community at the gig by draping a rainbow flag over his microphone stand and later waving it over his head.