Sneak Peek: Nicole Richie Lives By The Rules Of Beverly Hills, 90210'

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Nicole Richie and her little sis, Sofia Richie are pretty tight but on an all new episode of Candidly Nicole, Nicole is horrified to see that her sister can barely look up from her phone to engage in a conversation.

In a sneak peek, Nicole asks Sofia if she wants to reach the next level in their friendship - like Brenda Walsh and Kelly Taylor - but Sofia has no idea who Nicole is talking about. "90210 taught me everything," Nicole screams!

Do you think Nicole and Sofia will be able to make it work like Kelly and Brenda, sorta did? Here's hoping they have more of a Kelly and Donna Martin thing going on. Tune into an all new episode of Candidly Nicole Thursday at 10 PM ET/PT.