Jessica Alba and daughters announce baby No. 3

LOS ANGELES — Jessica Alba is expecting baby No. 3.

The actress made the announcement in a picture on Instagram of herself and her two daughters. Her eldest daughter is holding up a balloon in the shape of a one, her second has a two balloon and Alba is holding a three balloon with her hand on her stomach.

In the caption, she writes that she and her husband, producer Cash Warren, “are officially going to be outnumbered.’’ She added the hashtag #babyonboard.

Alba rose to fame in James Cameron’s Fox series “Dark Angel’’ in the 2000s. She’s starred on the big screen in “Sin City’’ and its sequel and other films.