Sofia Vassilieva is Paley Center Pretty

Sofia Vassilieva is pretty in purple as she attends the PaleyFest and TV Guide Magazine’s CBS Fall television preview party at The Paley Center for Media in Beverly Hills on Friday night (September 11).

The 16-year-old My Sister’s Keeper actress stars as Ariel Dubois in CBS’ Medium with Patricia Arquette.

In one of the upcoming episode’s in the new season, titled “Who’s That Girl” has Allison (Arquette) suspecting that Ariel (Vassilieva) is possessed by the spirit of a murdered stripper who is seeking revenge on her killer.

The new season of Medium premieres Friday, September 25th @ 9PM ET/PT on CBS .

10+ pics inside of Sofia Vassilieva…