Terry Richardson is now dad to a set of twin boys!

The photographer's longtime girlfriend, Alexandra Bolotow, gave birth to sons Rex and Roman on March 19, he announced on his Instagram.

"Watching this woman rock it through an insane delivery and push out our babies was the most intense, inspiring, exhilerating (sic), and humbling experience of my life. So blessed and grateful for this sweet family," Terry, 50, captioned a photo of Alexandra holding the twins.

RELATED: 'Fifty Shades of Grey' Star Jamie Dornan Welcomes His Second Child

The controversial artist and his 32-year-old baby mama first announced the pregnancy in October. Alexandra originally worked as Terry's assistant before they became an item.

Congrats to the new family-of-four!