Nicole Richie Pregnant With Second Child?

Nicole Richie has fueled rumors she's pregnant with her second child - after revealing she wanted a companion for daughter Harlow.

The 26-year-old star -- who gave birth to her first child with boyfriend Joel Madden in January this year -- is now said to be expecting her second child.

A source reveals, "Nicole is dying to have a sibling for Harlow who is close in age. She doesn't want them to be more than two years apart, so that they can be best friends forever."

The 'Simple Life' star first sparked reports she may soon be adding to her brood when she was spotted wearing a flowing lilac 'maternity-style' top.

An onlooker said, "The top was not something Nicole usually wears. She ordinarily goes for tight T-shirts and vest tops. The other unusual thing was that she was wearing comfy sheepskin boots and not her usual heels - the boots definitely looked like something a pregnant woman would wear."