Sofia and Nicole Richie
Who they are: Before Nicole Richie became a mother and fashion designer, she starred in the Simple Life with Paris Hilton. Since then, Nicole's taken her fashion prowess to run her successful House of Harlow line. Sofia, on the other hand, got her start with Madonna's line Material Girl and is friends with the likes of Cara Delevingne. She is currently making headlines for dating Scott Disick, Kourtney Kardashian's long-time ex flame.