140529 Girls Generation Yoona's birthday hashtag "HappyYoonADay" is trending in 10 total countries

#HappyYoonADay 10 Total Trends

#1 Thai

#1 INA

#1 Japan

#1 Vietnam

#2 Worldwide

#2 Malaysia

#2 Korea

#2 PH

#2 SG

#4 US