SEE ALSO: A-PRINCE is ready to "Mambo" through their comeback MV

A-PRINCE shared on their official Facebook, "To all A-LANDs! September 5th is A-Prince 300th day since official debut. You can send your greetings to our princes Sungwon, Minhyuk, Seungjun, Siyoon and Woobin below this post. Send your tweets to @APRINCEofficial with a hashtag #300dayswithAPrince ~<3,"�thanking fans with a photo of their cute selves holding up a fan-made cake.

A-PRINCE just got back from their Asia tour in Japan, Singapore, and Malaysia, growing their fan base as each day passes. The boys will return to Japan for the FunLIVE concert at Zepp Tokyo on October 23.

Congrats, A-PRINCE!

Tip: Kara