Rochelle and Marvin Humes are expecting their second child together.

Rochelle Humes showing off baby bump (c) Instagram

Rochelle Humes showing off baby bump (c) Instagram

The couple are going to give their three-year-old daughter Alaia-Mai a younger sibling and The Saturdays singer announced her and her husband's happy news on her Instagram account on Thursday morning (17.11.16).

Posting a stunning black and white photograph of herself holding her bare burgeoning baby bump, Rochelle, 27, wrote: "Ten tiny fingers, ten tiny toes, but who are you? Nobody knows..."

Former JLS star Marvin, 31, took to his Twitter account shortly after his wife made her social media post to share their joyous news admitting they are both "over the moon" to become parents again.

He tweeted: "Absolutely delighted to announce that Rochelle and I are extending our family! We're over the moon! Baby Humes no2 is on the way!!"

Rochelle teased that she and Marvin - who are to present a segment of the BBC's 'Children In Need' charity telethon together - were going to be parents again in an interview published earlier in November.

Speaking to The Sun on Sunday's Fabulous magazine she revealed that Alaia-Mai had been asking her when she would be getting a little brother or sister.

She said: "Alaia's been quizzing me and saying that her friends all have brothers or sisters. At the minute I feel so blessed and happy with the way everything is that I'd never put pressure on that, but definitely in the future."

And Marvin - who has been married to Rochelle since July 2012 -also recently admitted he had been feeling "broody" and wanted to have another baby by next year.