August 18 is Big Bang leader G-Dragon's birthday (as many fans are already aware of) and he spent the night hanging out with his posse of best friends.

Formed in 2007, Nuthang is a group of young entertainment industry professionals (models, actors, singers, stylists, dancers, etc.) who have a very close friendship with one another.

Some of them, like G-Dragon or model Lee Soo Hyuk, are very recognizable, but Big Bang fans have undoubtedly seen the others a lot as well (especially because they often appear in Instagram photos together).

And it seems that G-Dragon could not think of anyone better to celebrate his 25th year with than his crew of friends for over five years.

In a photo posted by YG dancer Jo Sungmin from the Saturday night celebration, G-Dragon can be seen smiling surrounded by a large group including actor Hong Jong Hyun, Lee Soo Hyuk, and several other YG dancers.

The photo's caption read, "happy B day ma love ^^"

Even 2NE1 leader and close personal friend of GD joined the festivities (and a few pictures)!

Looks like a good birthday party for G-Dragon!