Priyanka Chopra follows Mallika to Twitter headquarter

Bollywood actress Priyanka Chopra, who is set to cross the 200,000 mark in Twitter followers, visited the headquarter of the micro-blogging website in San Francisco after being especially invited there.Priyanka tweeted about her visit to the headquarter where she met Biz Stone, Twitter co-founder."My day was really interesting because I was invited to Twitter headquarter in San Francisco!