Her Opponent: Twitter user @iStan4Rihanna_
Why They Were Beefing: In mid-May, Rihanna started following Chris Brown on Twitter again, which upset many of her fans. One even tweeted: "I never thought you would go back to him! You better not, it's your life but you do have ppl that look up to you. e.g. young girls." The reaction caused Rih-Rih to shoot back: "its fuckin twitter, not the alter! calm down." She later apologized.
The Result: This is the last time we're gonna say this: If you write something about Rihanna on Twitter, she will hunt you down and do something about it. And not everyone is getting an apology.