Pictures First Time Celebrity Mommys August 13, 2011 / 5:39 PM EDT / CBS News Photo by: Kevin Winter/Getty Images Jewel Murray Photo by: Jason Merritt/Getty Images Natalie Portman Photo by: Ethan Miller/Getty Images Pink Photo by: Mark Ralston/Getty Images Evangeline Lilly Photo by: Valery Hache/Getty Images) Alicia Silverstone Photo by: Andrew H. Walker/Getty Images Mariah Carey Photo by: Gabriel Bouys/Getty Images Jane Krakowski Photo by: Jemal Countess/Getty Images Elizabeth Banks Photo by: Kevork Djansezian/Getty Images Penelope Cruz Photo by: Carlos Alvarez/Getty Images Christina Applegate Photo by: Frederick M. Brown/Getty Images Alicia Keys Photo by: Larry Busacca/Getty Images Rachel Zoe Photo by: David Livingston/Getty Images Miranda Kerr Photo by: Andrew H. Walker/Getty Images Alanis Morissette Photo by: Frazer Harrison/Getty Images Ali Larter Photo by: David Livingston/Getty Images