IE 11 is not supported. For an optimal experience visit our site on another browser.

Hilaria and Alec Baldwin expecting baby 'this fall': See the sweet announcement!

Another baby boy is on the way for Hilaria and Alec Baldwin.
/ Source: TODAY

A(nother) baby boy is on the way for Hilaria and Alec Baldwin!

"Whiskey Tango Foxtrot" World Premiere
NEW YORK, NY - MARCH 01: Hilaria Thomas (L) and Actor Alec Baldwin attend the \"Whiskey Tango Foxtrot\" world premiere at AMC Loews Lincoln Square 13 theater on March 1, 2016 in New York City. (Photo by Nicholas Hunt/Getty Images)Nicholas Hunt / Getty Images

Just days after the couple appeared together at a premiere for "Whiskey Tango Foxtrot," starring Alec's "30 Rock" co-star Tina Fey, Hilaria announced the happy news publicly via Instagram. The arrival will be the fourth child for Alec — who has daughter Ireland, 20, with ex-wife Kim Basinger — and the third child for Hilaria and Alec as a couple, who together have a daughter Carmen, 2½, and son Rafael, 7 months.

"Ireland, Carmen, Rafael, Alec, and I are excited to share with you that we are going to have another addition to our family," reads Hilaria's caption to her photo, posted Wednesday afternoon. "A little boy coming this fall."

RELATED: Chrissy Teigen's baby shower was a royal event

Hilaria Baldwin (L) and Carmen Baldwin
NEW YORK, NY - FEBRUARY 16: Hilaria Baldwin (L) and Carmen Baldwin pose backstage at Carmen Marc Valvo F/W 2016 at The Arc, Skylight at Moynihan Station on February 16, 2016 in New York City. (Photo by Ben Gabbe/Getty Images for Carmen Marc Valvo)Getty Images

The photo, showing Hilaria holding a tiny blue teddy bear and kissing Alec on the corner of a city street, collected almost 4,000 likes within an hour of its posting.

Follow writer Chris Serico on Twitter.