Lupita Nyong'o steals the show at festival's opening ceremony

undefined made sure all eyes were on her when she walked the red carpet at the 68th annual undefined opening ceremony on Wednesday evening (13.05.15).

The 32-year-old actress - who joined a host of glamorous stars at the '' premiere - wore a stunning one-of-a kind jade Gucci chiffon plisse gown with a cape detail which diamond encrusted alice bands, elegant diamond drop earrings which she showed off by tying her hair in a bun.

The 'undefined' star lapped up the attention as hundreds of flashes went off from the throng of paparazzi.

Other guests include Oscar winner Julianne Moore, undefined, who walked the red carpet with her husband Benjamin Millepied, Naomi Watt and Sienna Miller - who is sitting on the judging panel this year.

Moore wore a classy black Armani Privé gown complete with over-the-top embellishments on the shoulders in a netted sequin-type wrapover giving a feathered effect, while Watts also dazzled in a gorgeous light grey sequinned gown with a full feathered skirt.