Nicole Richie and Joel Madden wed

Nicole Richie and Joel Madden have reportedly got married.

According to website RadarOnline, the couple – who celebrated the birth of their second child, son Sparrow, last month – are rumoured to have secretly tied the knot in an intimate service on Wednesday (14.10.09) after obtaining a marriage licence last week.

A spokesperson for the couple – who also have a 21-month-old daughter Harlow – is yet to comment on the reports but further speculation was fuelled after Nicole and Joel registered Sparrow's birth.

The little boy's full name is listed Sparrow James Midnight Madden, while Harlow's entire moniker is Harlow Winter Kate Richie Madden.

The news comes after it was revealed Nicole was keen to wed the Good Charlotte rocker following the death of her ex-fiance DJ AM, real name Adam Goldstein, in August.

A source said: "Nicole has never been in a rush to get married to Joel. She's so happy with him and their little family that she didn't feel the need to change the way things were between them.

"But when Adam died, she freaked out. She realised life is fragile and short. She doesn't want to have any regrets at all, and she does want to be Joel's wife."