Baby-Licious! Fergie & Josh Duhamel 'Trying To Conceive’ Second Child

Fergie and her hunky hubby Josh Duhamel are working on a top-secret new project for 2015 — a second child!

“She and Josh are trying to conceive another child right now,” a pal tells RadarOnline.com exclusively.

“Axl needs a partner in crime,” the source says, referring to the Hollywood power couple’s 17-month old son Axl Jack.

“He is going to make the best older brother and they know that the time is now because they do not want to let too many years come in between their children.”

On Jan. 9, the “Fergalicious” singer, 39, took to her Instagram to share that she and Duhamel, 42, were celebrating their six-year wedding anniversary. “Married 6 years tomorrow! #flashbackfriday2009 #happyanniversary” the caption read.

“People are surprised that they have lasted this long,” the insider tells RadarOnline.com. “But they are not. They are best friends before anything else.”

“They are so low-key because they love what they do, but don’t like the life that comes with it. They prefer to be home with each other rather than out there because of the lack of privacy. She says she will be with him forever.”