Amber Rose -- Twerks in Celebration of Wiz Khalifa's #1 Album

Wiz Khalifa's number one album is his victory, but Amber Rose is sharing the spoils with the world.

To celebrate Wiz's "Blacc Hollywood" topping the Billboard album charts, Rose posted a video of herself on Instagram twerking away ... captioning it, "In honor of my Hubby's #1 Album #blacchollywood #AssDrop."