United Kingdom, Sept. 5 -- Natalie Portman has reportedly given birth to her third child.

While the 45-year-old actress has yet to officially announce the news, an "exclusive source" told People that Natalie welcomed the tot - her first child with partner Tanguy Destable, in Paris, France, in August (26).

The gender and name of the baby have yet to be revealed.

The tot will be a brother or sister for Natalie's older children, 15-year-old Aleph and nine-year-old Amalia - the screen star's kids with her ex-husband Benjamin Millepied.

The report of the baby's arrival comes after Natalie shared a stunning pregnancy portrait on her Instagram page, admitting she was "counting down the days" until her due date.

In the snap, she was seen sho...