Shailene Woodley in an open back dress at the 'Insurgent' premiere in London

American actress Shailene Woodley attended the premiere of her latest venture 'Insurgent' held in London.

The 23 year old brunette, who usually opts for tomboy looks, looked elegant in a white floor-length gown from Ralph Lauren Collection.

Shailene sizzled in the open back look with details of striped fabric on the sleeves, and oozed off contemporary elegance.

The minimalistic style dress clung her in all the right places and highlighted her toned physique.

Shailene styled the look with an elegant updo, a soft makeup look and a dark manicure.

Her accessories included a simple gold bangle and strappy gold stilettos.