The 34-year-old wore a gorgeous off-the-shoulder red dress with a ruffled neckline ... crystals down the front and it had a low-cut sweetheart neckline that showed off major cleavage.

The human-rights lawyer made a rare appearance at Cannes, sticking to the showstopping vintage silhouettes she loves.

Square and off-the-shoulder necklines are becoming more common than sweetheart ... had a sweetheart neckline, bow detailing on the waist, and a slit in the full skirt. Dresses with corset designs ...

The full‑length black dress featured a softly structured off‑the‑shoulder sweetheart neckline and a fitted bodice that nipped at the waist before flaring into a sweeping side train.

The Saint Laurent black velvet column dress, another off-the-shoulder cut, featured white gathered fabric along the neckline as was paired with an elaborate Bulgari diamond necklace and matching ...