Heidi and Seal are thinking pink! When the singer and pop to Leni, 4, Henry, 3, and Johan, 2, appeared on Friday's Oprah show, Seal gave the queen of talk the nod to announce the sex of their impending babe. It's a girl! Looks like the sister/brother ratio in the Klum/Samuels clan will be even. And another lil supermodel is in the making!