Happy birthday to A Pink's Namjoo!

Born on April 15, she is celebrating her 19th birthday - her last and final year as a teen before entering the 20s. �Sweet fans immediately took to Twitter to relay their congratulations, adding hashtag "#??4MyLove (#Namjoo4MyLove)" so that the whole world can know of her birthday!

SEE ALSO: 'Knowing Brothers' reveals teaser for next week's episode featuring Apink

Make sure you join in and wish her a happy birthday through your own Twitter!