Jennifer Garner and Ben Affleck kicked off 2009's celebrity baby boom when they welcomed a second daughter, Seraphina Rose Elizabeth, into the world on January 6. Big sister Violet is 4. George Pimentel/WireImage.com - January 15, 2007
George Pimentel
Twins were the theme of the year for 2009 with everyone from Sarah Jessica Parker to Roger Federer and Charlie Sheen debuting double bundles of joy.