Just a week after the birth of their first child, veteran singer Elton John, 63, and his partner David Furnish, 48, are planning a second baby. The duo welcomed son Zachary Jackson Levon Furnish-John on Christmas day in California via a surrogate. Now their friends say Furnish, who who has two brothers, is keen that Zachary too has a sibling, reports dailymail.co.uk. There is a possibility that the new addition to their family comes in 2013.