Jessica Lange, Elizabeth Olsen, Tom Felton, and others step out to the premiere of In Secret presented by Forevermark Diamonds; Jonah Hill helps honor Leonardo DiCaprio and Martin Scorsese with the Cinema Vanguard Award at the 29th Santa Barbara International Film Festival; Kate Bosworth and Michael Polish are among the guests at the exclusive celebration for the Van Cleef & Arpels boutique redesign—see who was out getting a head start on weekend festivities in this edition of Last Night's Parties.