Los Angeles - Miley Cyrus says Amanda Bynes' Twitter attacks are "so sad".
The troubled star insulted the 20-year-old singer on the social networking site on Tuesday night when she called her ugly, but the Can't Be Tamed hitmaker isn't being drawn into a public feud.
Speaking to radio station Hot 95.5, she said: "I won't even entertain that thought. I think it's all so sad and I don't want to add any fuel to that fire. It's so sad to me.
'I just thought it was hilarious'
"I was rooting for her comeback until she started attacking me, and I just thought it was hilarious that she mentioned my name the moment I was the worldwide trending topic on Twitter.
"It's just funny the moment you're a trending topic how many people want your name to come out of their mouth, so somehow they can associate and maybe they can become a trending topic."
Amanda, 27, also insulted rapper Drake on her Twitter account last week.
Although she deleted the initial tweet, she had written: "Drake has the ugliest smile, ugly gums uneven teeth ugly eyes."
She later added: "I won't deny calling @drake ugly."
The troubled star insulted the 20-year-old singer on the social networking site on Tuesday night when she called her ugly, but the Can't Be Tamed hitmaker isn't being drawn into a public feud.
Speaking to radio station Hot 95.5, she said: "I won't even entertain that thought. I think it's all so sad and I don't want to add any fuel to that fire. It's so sad to me.
'I just thought it was hilarious'
"I was rooting for her comeback until she started attacking me, and I just thought it was hilarious that she mentioned my name the moment I was the worldwide trending topic on Twitter.
"It's just funny the moment you're a trending topic how many people want your name to come out of their mouth, so somehow they can associate and maybe they can become a trending topic."
Amanda, 27, also insulted rapper Drake on her Twitter account last week.
Although she deleted the initial tweet, she had written: "Drake has the ugliest smile, ugly gums uneven teeth ugly eyes."
She later added: "I won't deny calling @drake ugly."