There are stars and there are superstars, and Beyonce is definitely the latter. The singer attended the premiere of her documentary "Beyonce: Life Is But A Dream" at the Ziegfeld Theatre in New York City on Tuesday, and she was smoking!

The pop star wore a sheer Elie Saab Couture gown, which showed off some cleavage and her curvy figure. It was quite a departure from her Grammy look, a black and white jumpsuit with much less sex appeal.

Beyonce graces the cover of the March issue of Vogue and opens up about how motherhood has changed her life since giving birth to daughter Blue Ivy a year ago. She explained: "I just feel my body means something completely different. I feel a lot more confident about it. Even being heavier, thinner, whatever."

Well, that confidence is shining through because she looks amazing.

The singer was joined on the red carpet by her sister Solange, who also rocked a fierce look at the event. She went sans pants with a white shirt and jacket.

Watch the video below and check out more photos of Beyonce and Solange on the following pages...