Cannes 2015: Julianne Moore, Naomi Watts take the plunge

Julianne Moore poses for photographers on the red carpet at the opening ceremony and the screening of the film La Tete Haute (Standing Tall) at the 68th international film festival, Cannes, southern France. (AP)

Julianne Moore poses as she arrives for the opening ceremony of the 68th Cannes Film Festival in Cannes. (AFP)

Naomi Watts (AFP)

(AFP)

Natalie Portman and her husband French dancer and choreographer Benjamin Millepied (AFP)

(AFP)

Sienna Miller and Guillermo Del Toro (AP)

Ethan Coen (L) and Joel Coen (R) pose with jury members French Sophie Marceau, Rossy de Palma, Guillermo del Toro, Malian Rokia Traore, Xavier Dolan, Sienna Miller and Jake Gyllenhaal as they arrive for the opening ceremony of the 68th Cannes Film Festival in Cannes. (AFP)

Lupita Nyong'o (AFP)

Liya Kebede and Doutzen Kroes (AFP)

Karlie Kloss (AFP)

Bar Refaeli (AFP)

Jane Seymour (AFP)

Benoit Magimel, Catherine Deneuve, Emmanuelle Bercot, Rod Paradot and Sara Forestier (AFP)

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