2011 Selena Gomez vs Katie Cassidy styles at premiere

As we seen to the pictures, Selena Gomez and Katie Cassidy was pose together at the premiere of kids movie. Selena Wearing a long blue dress which flashes her curvy cleavage, while Katie wearing short red (or pink ?) dress which flashes her leg. the question is who's more elegant look between Selena Gomez long gown dress or Katie Cassidy style?