Kristen Stewart looked stunning on Late Night With Jimmy Fallon, wearing a tight, sparkly silver mini dress and Christian Louboutin heels.

The 19-year-old, who is rumoured to be dating her Twilight co-star, Robert Pattinson, is doing the rounds, promoting her new film The Runaways.

The film is a biopic of the female 70's rock group The Runaways and Kristen plays the bands lead singer, Joan Jett.

It's a change to see Kristen in something so figure hugging as she usually dresses in baggier clothing. We think she looks fabulous!