F(x)’s lead vocal Luna turns 19 today!

Known for her cute smile and dangerously sexy body waves, Luna is young but brings power and edge to f(x)’s songs and performances.

Right now, f(x) is busily preparing for its Japanese debut, but we hope that Luna at least has some time to celebrate her birthday with some well-deserved rest, cake and love from her fans.

Adorable! Look at those cute chubby cheeks!

She appeared on Truth Game when she was 13 years old, where she impressed SM Entertainment with her body wave.

Her signature cute smile is still there.

IU and Luna, two of the cutest BFFs!

A 2011 photoshoot shows her mature side. Love the concept!

Photo credit: Online community, Luna and IU′s ME2DAY, SBS, Marie Claire Korea