Sandara Park actually is also performing in the video as she dances with Taeyang plus another featured KPop artist G-Dragon.
They all look hot! Watch the said music video:
"I Need A Girl" is a track in Taeyang's first full-length album entitled "Solar", which is in reference to his Korean stage name (Taeyang) meaning "sun".
So probably that explains why Taeyang is so hot!
Photos from Facebook
