Amanda Bynes set off a tirade of tweets this afternoon aimed at Rihanna. The insults from the actress were unprovoked, but got the pop singer's attention.
The first tweet from Bynes went something like, "@rihanna Chris Brown beat you because you're not pretty enough."
The second went a little like, "@rihanna No one wants to be your lover so you call everyone and their mother."
At which point RiRi chimed, "Ya see what happens when they cancel Intervention?"
To which Bynes shot back, "@rihanna Unlike your fugly faced self I don't do drugs! U need the intervention dog! I met your ugly face in person. U aren't pretty u know know!"
Bynes deleted all her tweets, but not before some were captured via screen shot. Rihanna has not removed her comeback.