Robin Thicke's "Blurred Lines" has been getting a lot of attention. It was the controversial song that got Miley Cyrus twerking at the VMAs 2013 performance and it is Robin Thicke's biggest hit. But is it an original song? Kpop star IU also has been charged with copping the melody of another hit.

The family of Motown legend Marvin Gaye sued Robin Thicke over "Blurred Lines." Robin Thicke's "Blurred Lines" topped pop charts around the world. Marvin Gaye's family sued the songwriters Robin Thicke and Pharrell Williams for copyright infringement over the song.

Marvin Gaye's children filed legal papers accusing Robin Thicke and Pharrell Williams of copying the late singer's hit song "Got To Give It Up." Marvin Gaye's family are seeking damages and a portion of the profits "Blurred Lines" has generated.

Robin Thicke's "Blurred Lines" was the song being performed at the now-notorious Miley Cyrus VMAs 2013 performance.

The lawsuit is in response to a claim Robin Thicke and Pharrell Williams filed in August. The songwriters sought a court ruling saying "Blurred Lines" did not infringe "Got to Give It Up"'s copyright. Robin Thicke says there are no similarities between the songs "other than commonplace musical elements".

Marvin Gaye's family pointed to an interview that Robin Thicke gave to a music magazine saying he drew on "Got to Give it Up" when he was producing Blurred Lines.

The Gaye family also said Robin Thicke's song "Love After War" from 2011 amounted to "unlawful copying" of Gaye's song "After The Dance War" from 1976.

The legal claim says "This conflict has resulted in EMI's intentional decision to align themselves with the [Blurred Lines] writers, without regard to the harm inflicted upon the rights and interests of the Gaye Family, and the legacy of Marvin Gaye."

Sony/ATV Music Publishing, which owns EMI, said "While we have not yet seen the claims by the Gaye family against EMI, we have repeatedly advised the Gaye family's attorney that the two songs in question have been evaluated by a leading musicologist who concluded that Blurred Lines does not infringe Got To Give It Up."

Kpop Star IU was also recently accused of plagiarism in her new single "The Red Shoes."

IU's "The Red Shoes" is being compared to Nekta's 2009 hit "Here's Us."

Kpop singer IU's "The Red Shoes" was written by Lee Min Soo and Kim Ee Na.

What do you think?

Here's Robin Thicke's "Blurred Lines":

And here's Marvin Gaye's "Got to Give It Up" perfromed on Soul Train:

Here's IU's "The Red Shoes":

And here's Nekta's "Here's Us":