It's tough out there for a celebrity mom with a baby cover exclusive with People. From Nicole Richie's non-groundbreaking Harlow cover to Christina Aguilera's boobalicious Max debut, no glossy cover with a star baby splashed across it will ever compare to that of The Chosen One. Well, unless The Chosen Two follow in their goddess-like older sister's footsteps. And despite the fact that Jennifer Lopez received the heftiest payday on record to introduce twins Max and Emme to the masses, MSNBC...