Justin Bieber Parties With a Boatload of Models (Literally!) Because What Else Are the Young to Do?

Justin is living his life with 'Purpose.'

Good to see you living your life with Purpose, Justin Bieber!

A source tells ET that the 21-year-old appearance-maker spent the weekend with about 10 women -- mostly models based in Los Angeles -- hanging out on a boat docked in Orange County, California. The source also says that Justin knew most of the ladies prior to the rendezvous.

The singer posted a photo from the event on Instagram, writing, "Good times good people good luck."

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It was a busy weekend for Justin, who did pop-up performances in both Laguna Beach and Newport Beach on Saturday night, and still found time to play Sour Patch Kids poker with some friends.

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"Listening to @poobear the most talented person on the planet besides me ??? I kid I kid but seriously," the "Where Are U Now" singer wrote on another photo over the weekend.

You keep doing you, Justin!

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Meanwhile, the singer found himself at the center of some Kourtney Kardashian dating rumors! Watch the video below.