Jessica Alba is pregnant.

The 'Fantastic Four' actress announced she and husband Cash Warren were "thrilled" to be expecting their second child, who would be a younger brother or sister to two-year-old daughter Honor.

Writing on Facebook, the 29-year-old beauty said: "It's been a while since I've been on FB & I thought I'd drop by to let you all in on some exciting news.Honor is going to be a Big Sister!

"Cash and I are thrilled and wanted to share the news directly with you so you didn't hear about it somewhere else. I appreciated all of the love and support you all gave me during my first pregnancy and will definitely appreciate it again this time around. Have a great day!(sic)"

Jessica - who married Cash in May 2008 - recently revealed becoming a mother had made her a "little more wild"

She said: "Oddly, I think I'm a little more wild and free since I had Honor because once she's in bed all my mum friends come over and we have dance parties at my house.

"It's really dorky and I probably wouldn't have done that before. But no, I don't go out. I hang out with my friends and I'm pretty chilled."