The Los Angeles Galaxy soccer star, who posed on a beach in just his underwear for an Emporio Armani campaign, was stunned when he attended the official unveiling of the giant billboard in San Francisco.

In a posting on his official blog, David wrote: "Well I'm sure you've seen the pictures but last week I went to San Francisco to see the unveiling of the new Emporio Armani campaign I shot a while back. To be honest I was amazed by the huge billboard poster outside Macy's department store, but even more amazed by the amount of people who turned up to see it! I'm always surprised by the amount of attention certain things create, but the attention this campaign has created is pretty incredible.

"It was great to meet some of the people who'd come out especially though, I've always wanted to visit San Francisco, so it was a great to finally get there."

[View our David Beckham picture gallery]