Justin Tops Twitter's Most Listed

As you may already be aware, Lady Gaga is Twitter’s most-followed user with more than 5.74 million followers. But who is Twitter’s most-listed user?

Now that 10 months have passed since the introduction of Lists, who reigns supreme as Twitter’s most-listed user? Is it Lady Gaga, Twitter’s most-followed user? Or how about Britney Spears, who previously held the crown? Or perhaps it’s Ashton