Dakota and Elle FanningDakota and Elle FanningIf you thought Dakota Fanning was the youngest, cutest actress in Hollywood, it's time to reconsider.

Dakota has an even smaller sister...

The super cute Elle, who is just eight, joined Dak at the Sundance Film Festival in Utah.

Elle is actually a star in her own right now, having appeared in the likes of Babel and House...

But on this occasion, she was on-hand to support 12-year-old Dakota, who was in town for the screening of her latest film Hound Dog.

The actress took some time off for a bit of slope action with ickle Elle.

So just who is the sweetest?

We can't decide. See if you can in the gallery above.