The former reality star shares daughter Harlow, 16, and son Sparrow, 15, with her husband Joel Madden Rodin Eckenroth/Getty Nicole ... only thing Richie learns about from her children.

It didn't take long for Nicole Richie to realize that Joel Madden was the one for her. Richie opened up about ... The couple have since welcomed two kids, daughter Harlow, 16, and son Sparrow ...

Nicole Richie is getting candid about her first date ... want to avoid the topic of her hard partying younger years with her kids. "They know everything I did,” she went on.

“They were a big part of the reason why I decided to do a reunion,” Richie says, adding that her kids were “all for it.” Phoenix takes music classes with his sister, plus the “Nicole” ...

she admits that her kids are already aware of the risks that come with an online presence. (L-R) Lionel Richie, Lisa Parigi, Harlow Madden, Sparrow Madden, Nicole Richie, Brenda Harvey-Richie ...

Nicole Richie is making sure she's in the know when it comes to ... made it much easier for Richie to talk about it with Harlow and Sparrow, she admits that her kids are already aware of the risks ...