Sienna Miller is a mommy!! The 30-year-old actress gave birth to her first child over the weekend, Us Weekly reports. Keeping to their super-private style, Sienna and her fiance Tom Sturridge have not released any details, such as gender, name, and size, on the birth of their little one.

Related article: Sienna Miller Shows Off Her Baby Bump

Sienna Miller

Related article: Sienna Miller & Boyfriend Tom Sturridge Expecting First Child

Sienna was well into her pregnancy before she even confirmed the news that she was expecting and finally dished on the good news in an interview with British Vogue last April. Sienna told the fashion mag, "Even though I'm under strict instruction not to say anything as it would completely defeat the point of everything I've tried to achieve in the last eight years... I'm feeling fine... It's all progressing nicely and it's very exciting."

Wonder if how long it will be before Sienna reveals any deets on her little bundle of joy.

Congrats to the happy family!

Photo courtesy of Fame/Flynet

UPDATE: Us Weekly reveals that the baby is a GIRL!! Congratulations!