4 Minute's member Kwon Sohyun celebrated Nam Jihyun's birthday. 

Kwon Sohyun posted a picture on her Twitter along with the comment "Our Namji Unni! It's her birthday~ it was small but we three a party at the filming site! Thank you to all the fans that sang Happy Birthday to Jihyun unni! Happy Birthday unni~ I love you!"

The picture showed the members celebrating Nam jiyeon's birthday at the filming of MBC 'Idol Star Athletics & Swimming Championships'. In the picture, Nam Jihyun is happily cutting her birthday cake while member Huh Gayoon watches happily. 

Fans who saw this commented "Happy Birthday!" and "I'm glad to see all the members so happy~!"