Sienna Miller [1] and Tom Hiddleston attended the London premiere of their new film, High-Rise, on Friday. Sienna and Tom kept their streak of cute moments [2] going, sharing plenty of laughs with their costar Elisabeth Moss [3] on the red carpet. Luke Evans was not in attendance, but he did appear alongside Sienna [4] and Tom at the San Sebastián International Film Festival in Spain back in September. Read on to see more photos from the trio's night out, then check out Tom's crazy-good Robert De Niro impression [5].