Rapper Wiz Khalifa is beaming with joy over his fiancee Amber Rose's pregnancy. The blonde-haired model was glowing when she unveiled her baby bump at the 2012 MTV Video Music Awards. The Pittsburgh native seems content on pending fatherhood.

"We found out this summer, and it was more of a celebration than anything," Wiz shared with MTV News at the VMAs. "I did a backflip; she was doing this little dance that we made up." Rose adds, "It's called the monkey butt dance!"

We are not sure how this new dance goes, but we are quite sure it requires a lot of booty shaking and hands waving in the air like you just don't care.

Baby dances aside, Wiz has a busy schedule ahead of him. He's about to embark on his 2050 Tour in October and his new album 'O.N.I.F.C.' should be in stores, as well. "I've been pretty focused my entire life, and now that I have a family, I'm just going to keep that focus, but it's going to be a family focus," says Wiz about juggling fatherhood and his music career.

Fellow Pittsburgh rapper and friend Mac Miller is also happy about Wiz and Rose's pregnancy news. So what does he plan to give the expectant parents? "Diapers and s---," said Miller. "Some Gucci diapers, yo." Those are going to be some expensive diapers.

Congrats to Wiz Khalifa and Amber Rose, and do your monkey butt dance. Shake it like a Polaroid!