Rapper Wiz Khalifa and model/singer Amber Rose, who announced their engagement just a few months ago, took advantage of the spotlight on Thursday by announcing that Rose is pregnant with the couple's first child.  "We're expecting a beautiful little baby,me and Amber. We're so excited we're having a baby!," Khalifa revealed during a red carpet interview before the ceremony.  Rose and Khalifa are not the first celebrity couple to reveal a pregnancy at the VMAs, as Jay-Z and Beyonce also revealed a pregnancy at last year's ceremony.