Iggy Azalea -- Gets 'Fancy' After Nick Young Drains a Three (VIDEO)

First things first, Nick Young is the realest -- he dropped a three at the Drew league and made the whole gym feel it, especially his fiancée, Iggy Azalea.

Whether or not she wanted to be dragged into the game ... the P.A. announcer made the I-G-G-Y part of the celebration when Nick swished a step back 3-pointer.

Check it out ... the crowd loved it, but Iggy herself seemed less than amused.

Swaggy's team ended up losing the final to LAUNFD led by James Harden on Sunday. Doesn't make this moment any less cute though.