1. Yes, she's one of THOSE Richies
Sofia is the daughter of Lionel Richie and his ex-wife Diana Richie. See the family resemblance?
The 17-year-old also has a brother, Myles Richie, and a non-biological older sister Nicole Richie.
2. She's a model, of course
An impressive portfolio includes the cover of ES magazine, a gig for ASOS magazine and becoming the face of Madonna's Material Girl clothing line.
3. She and Justin Bieber have been getting pretty cosy
The two went on a trip to Japan.
4. She has an A-List squad
Move over Taylor Swift! Sofia's friends include Bella and Gigi Hadid and Kendall and Kylie Jenner.
She told Access Hollywood last year: "Just knowing these girls from playing at their houses and hanging out on the couch... just things like that. It's really cool. We're all working hard for what we do."
5. And... she's at the centre of a major showbiz row.
Justin hit out at fans critical of his new flame, threatening to make his Instagram private. But ex-girlfriend Selena Gomez unexpectedly entered the fray, blasting him for not being able to handle criticism. He then disappeared from the social media site entirely, deleting or deactivating his account.
Sofia has kept her photos up, but the comments section is firmly turned off.