Miley Cyrus knows what Amanda Bynes was doing when the older actress called her ugly. The former Disney star refused to stoop down to the ex-Nickelodeon comedienne's level because Amanda only wanted to ride on her coattails.

Unprovoked, Amanda suddenly slammed Miley on her Twitter account, saying, "Ur ugly," on Tuesday. She added an unflattering photo of Miley without makeup.

Miley normally responds to direct tweets about her, but she remained silent about being the target of Amanda's favourite slur. The 20-year-old "Can't Be Tamed" singer then revealed that she chose to let it go because she didn't want to give Amanda what she's looking for: attention.

"I won't even entertain that thought," she told Hot 95.5's Kane radio show.

"I think it's all so sad and I don't want to add any fuel to that fire. It's really so sad to me. 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."

And while Miley is also guilty of drawing attention to herself, her assessment of the 27-year-old "retired" actress is a lot more believable than most of Amanda's Twitter rants.

Amanda has been calling out anyone who disagrees with her on Twitter, calling them "ugly." In fact, she has been overly using that word that it's already comical. She even called her own father ugly twice! What a way to greet dad on the upcoming Father's day!

There's one person whom Amanda thinks is "the most gorgeous man on the face of the earth," though. And that's none other than Liam Hemsworth, Miley's fiancé.

The praise was so unexpected that many people wonder why she suddenly had to express her love for the Aussie actor. It was then revealed that the two had a brief fling together back in 2009. They were snapped getting too cosy with one another at a Hollywood hot spot. Their flirting apparently did not survive after that one night.

Although it looked like her tweet was harmless at first, Amanda likely had to remind everyone of her past with Liam just to draw attention, especially since she knew a scandal with Liam would associate her name with Miley, who is unquestionably a bigger star.

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