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Watch Justin Bieber Celebrate His First #1 Debut With Cute Thank You Vid

Bieber hits #1 with a shaky thank you video.

Justin Bieber has done something he's never done before -- and at this point, it seems like he's done EVERYTHING. But there's one more milestone that he had to hit: his first #1 debut song.

That's right: Justin Bieber achieved his first #1 on Billboard's Hot 100 chart with "What Do You Mean?"

The bouncy love-struck song finally hit the airwaves on Aug. 28, and he performed it for the first time a few days later on the VMAs. After a whirlwind of promotion, including releasing the song's video last week, Justin has a reason to celebrate.

The singer posted a sappy, low-key video on Instagram, thanking his Beliebers for sticking with him and helping him with his first chart-topper:

"What Do You Mean?" is one of 23 songs to ever debut at #1 on the Hot 100 chart in its 57 years. It currently dethrones The Weeknd's "Can't Feel My Face."

You did it, Biebs!