Anna Kendrick hit the red carpet to attend the BFI London Film Festival for the UK premiere of her new comedy-drama, 50/50, held at the Vue Leicester Square on Thursday night. The 26-year old, who was joined by her funny man co-star, Seth Rogen, arrived to the event looking as fabulous as ever as she posed for the cameras!

19 photos in the gallery

OK! NEWS: JOSEPH GORDON-LEVITT TALKS WANTING TO KISS ANNA KENDRICK IN '50/50'

The Up in the Air actress showed off her tiny frame in a sexy mini, which she paired with a belt and black pointy pumps.

OK! NEWS: SETH ROGEN & LAUREN MILLER'S WEEKEND WEDDING!

Seth also had plenty to be happy about while promoting the new flick. The 29-year-old actor tied the knot with his longtime girlfriend Lauren Miller earlier this month!