Actors Eva Mendes and Ryan Gosling became first-time parents last week when the Latina gave birth to a baby girl, the US Weekly has reported.

Mendes, 40, and Gosling, 33, have had a romantic relationship since they acted together in the 2011 film, "The Place Beyond the Pines".

The couple is known for their discretion, even about her pregnancy, which she went so far as to deny on a television programme last February.

In 2009, when she was in a relationship with producer George Gargurevich, Mendes told Efe news agency that tying the knot was not in her plans.

"I do not see myself getting married. I am 35 years old but I feel like a kid. In the 60s and 70s, at my age, you were finished, but I feel like I am still growing. As for babies... no, not now," she said.

Mendes and Gosling worked together again recently in the actor's debut behind the camera as director of "Lost River", which premiered at the Cannes Film Festival.