Isaac's New Show, Rachel Roy's Pop-Up & Marc's Tees

• QVC has tapped Isaac Mizrahi to host a show that's "part pitch, part reality show." The shopping network will air eight hours of "Isaac Mizrahi Live!" a month beginning in December. [WSJ]
• Rachel Roy is opening a pop-up shop in Soho in September. [NL]
• Tory Burch has sold a stake in her company to a Mexico…