Gaga first to hit nine million followers on Twitter

London: Pop star Lady Gaga has become the first to have nine million followers on social networking site

Gaga, who is topping the Billboard charts for the sixth consecutive week with single "Born this Way", is officially the most followed celebrity on the site with Justin Bieber next to her in the second place, reports

According to reports, she has also broken the record for the most online singles sold and has had to date over one billion views on Youtube.

Gaga has recently been busy with fundraising for the Japanese tsunami and earthquake relief fund. She has already raised over $1.5 million for the victims.