f(x)‘s Sulli celebrated her birthday with her adorable little brother! Sulli turned 20 in Korea on March 29, and she spent it with her loving family. In the photos she shared, Sulli seems to be at home and she posed happily with her baby brother, picking out the strawberries in the cake. She posted the photos onto her me2day and wrote, “I spent my 20th birthday happily with my lovely little brother ^^. Thank you so much to everyone for congratulating me♥“. Her love for her little brother was obvious in the 4 small pictures. Luna also congratulated Sulli on her birthday, writing via me2day, “I sincerely congratulate Sulli on her 20th birthday♥♥ I snapped photos with dolls as cute as Sulli and flowers as pretty as her***♥***“.