Hollywood's hottest heartthrob is a daddy!

Eva Mendes and boyfriend Ryan Gosling welcomed a baby girl on Friday, Sept. 12, Us Weekly reports. This is the first child for the couple, who began dating in the fall of 2011 after costarring in The Place Beyond the Pines.

"She's been ready for motherhood for a while now and to be sharing this experience with Ryan is a dream come true for her!" a source dished to OK! when news of her pregnancy broke in July. "Ryan grew up without a dad, so he always said when he had kids, he'd be there no matter what. This is it for him," the source added.

The actress first sparked rumors she was expecting after she declined to go through an airport scanner in February. X17online also got pictures of the beginnings of her baby bump at an event in Beverly Hills later that month, which was the last time the fiercely private brunette beauty made a public appearance.

We want to know their new little angel's name!