Winning at Twitter is not just reserved for Charlie Sheen.
Lady Gaga has been cashing in on her freaky antics long before Sheen was treating himself for a drug addiction.
And Monday on Lady Gaga's 25th birthday, the "Born This Way" hitmaker hit a Twitter milestone.
@Ladygaga became the fastet account on the San Francisco-based social networking site to have nine million followers.
Lady Gaga has been an active tweeter since 2008.
