Nicole Richie has awesomely transformed herself from Paris Hilton's reality TV sidekick into a mom and fashion mogul. She also her own hilarious web series called "Candidly Nicole." One recent episode has gone viral because it's all about Richie's rapping alter ego, Nicki Rich. Oh, don't let her 90210 zip code fool you - Richie can drop it like it's hot. Watch as she works out her freestyle with her producer and then takes center stage.
See more on Richie and her rapping skills on Showbiz Tonight at 11 p.m. ET/PT on HLN.