Bye-bye, baby bumps! Hello, hot bodies. Though shedding weight after baby can be almost as difficult as giving birth, there's more pressure than ever for Hollywood moms to slip into their skinny jeans right after their children are born. From Kim Kardashian to Beyonce, click through to check out how star mommies have transformed their bodies after baby, starting with Kelly Rowland. The Destiny's Child singer remained pretty healthy and active during her pregnancy up until she gave birth to her son in Nov. 2014.