The happy couple looked as loved-up as ever at the Champs-Elysees Film Festival in Paris on Thursday (13 June), where Olivier was spotted placing a protective and affectionate hand on Halle's bump while they posed for photos together before heading inside to enjoy a screening of Things We Lost In The Fire.
Halle, 46, showed off her toned legs in a short black dress, which featured flowing pieces of material that gave the illusion of a longer length and also distracted from her bump.
She completed her outfit with a pair of strappy black heels and a few simple bangles.
Meanwhile, Olivier looked just as smart as his actress fiancée by wearing a simple tailored blue suit with a white shirt and black shoes.
The proud father-to-be let slip during the evening that he and Halle were indeed having a son, following recent speculation that the couple are expecting a boy.
Speaking to People magazine at the film festival, Olivier said: "My son will be an American, but I remain French."
Halle is due to give birth in autumn and is thrilled to be having a second child to keep her five-year-old daughter Nahla company.
The star - who shares custody of Nahla with ex boyfriend, Gabriel Aubrey - recently admitted that it was a 'miracle' to be expecting another baby, as it is all she had wanted after meeting Olivier. Aww!
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