Barbie Hsu, better known as "Da S" which means "Big S," caught the flu when she visited Japan with her family during the Lunar New Year, according to her sister.

"Our whole family came to Japan for a trip, and my dearest and most kindhearted sister Barbie Hsu died of influenza-induced pneumonia and unfortunately left us," Barbie’s sister

The Taiwanese star was known by her fans as ‘Big S.’ Learn more about her life, career and untimely death here.