Credit: Jeffrey Mayer/WireImage

Halle Berry and beau Olivier Martinez made their red carpet debut Saturday at the Carousel Of Hope gala in Beverly Hills.

The YSL-clad Berry, 44, arrived to the event holding hands with Martinez, also 44. Both were smiling and seemed very "smitten," says an onlooker.

During the event, the two were "inseparable" adds the witness. At their table, Olivier was "constantly leaning in and whispering in Halle's ear, making her laugh."

The pair met on the set of their upcoming thriller, Dark Tide.

How hot are things getting? She's even introduced him to her mom!