Who is the girl on a train in the Colgate commercial in 2017?

The girl on the train in the 2017 Colgate commercial is actress and model, Gigi Hadid. In the ad, she promotes the brand's toothpaste by showcasing her confident smile while riding the train. The commercial emphasizes the importance of oral hygiene and the impact of a bright smile. Gigi's presence adds a relatable and engaging element to the campaign.