voyeur nightclub hollywood blonde nicole richie long hair mom party denim voyeur nightclub hollywood blonde nicole richie long hair mom party denim Hollywood moms Christina Aguilera and Nicole Richie left the kids home for a night out at Voyeur Thursday night.

Although these former bad girls have pretty much cleaned up their act, paps weren't afraid to drag up the wild past when they asked Nicole Richie what she thought about former party pal Lindsay Lohan doing "hard time" in jail!

Nicole, now the demure mom, was tight lipped on the subject. Doesn't her time at Lynwood seem like a lifetime ago?

P.S. Who knew Nicole and Xtina were friends?