Wedding for Nicole and Joel?

Radar tells that the former party girl-turned-hands-on mom has been "talking more seriously" about making things legal since the August death of her onetime fiancé, Adam "DJ AM" Goldstein.



Adding to more speculation: reports Sparrow's birth certificate only contains the name "Madden," not "Richie Madden," like Harlow's.









This time last year, Richie hinted to People magazine that an aisle-walk would eventually take place, and it wouldn't be "top secret."

"When we get married, everyone will know," she says. "It will happen when it happens."

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Lawfully wedded or not, the pair, who began dating in 2006, already has the married-with-children routine down.